vpasolve returns an empty 0-by-1

1 次查看（过去 30 天）
Sandra Maria Cherian
评论： Walter Roberson 2018-7-16
d=0.0000069768864612587597911668974020503*abs(0.0014971643088774724217426966786832*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 0.79646034984568894324981066720091*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.0014971643088774724217426966786832*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (0.79646034984568894324981066720091*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.0014971643088774724217426966786832*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.00039070564183049054830534625451482*abs(0.0076111818601525499119164160184363*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 1.0122477090743241999494070206785*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.0076111818601525499119164160184363*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (1.0122477090743241999494070206785*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.0076111818601525499119164160184363*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.14065403105897659738992465162533*abs(0.19670589093603197065205388030138*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 1.6350539502270495481489608245487*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.19670589093603197065205388030138*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (1.6350539502270495481489608245487*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.19670589093603197065205388030138*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.000055815091690070078329335179216402*abs(0.0033756762032807659887074650937113*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 0.89789485158332064835768533430604*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.0033756762032807659887074650937113*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (0.89789485158332064835768533430604*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.0033756762032807659887074650937113*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.28130806211795319477984930325067*abs(0.44351537846621730265539440551947*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 1.8432889022715049894906607957337*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.44351537846621730265539440551947*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (1.8432889022715049894906607957337*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.44351537846621730265539440551947*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.0023442338509829432898320775270889*abs(0.017161032581268872239861549782574*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 1.1411641605020776149466846958615*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.017161032581268872239861549782574*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (1.1411641605020776149466846958615*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.017161032581268872239861549782574*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.000000077520960680652886568521082245003*abs(0.00029450103925537177209785329777719*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 0.62667377084647982822959191521466*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.00029450103925537177209785329777719*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (0.62667377084647982822959191521466*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.00029450103925537177209785329777719*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.011721169254914716449160387635445*abs(0.038693207528938104587288127788041*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 1.2864989760315610183847584006285*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.038693207528938104587288127788041*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (1.2864989760315610183847584006285*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.038693207528938104587288127788041*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.00000077520960680652886568521082245003*abs(0.00066401539507790484253057048941152*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 0.7064848269902931386257783989043*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.00066401539507790484253057048941152*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (0.7064848269902931386257783989043*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.00066401539507790484253057048941152*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 + 0.046884677019658865796641550541778*abs(0.087242087665028683172453603593576*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)^2*((1.374979925574044914426963259757*ter)/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) - 1.4503431430952670170858361997331*((1.0*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - (ter^(1/2) - 1.0)/(ter^(1/2) + 1.0))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0))/(((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)) - 1.0)^2*abs((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2*abs(ter^(1/2) - 1.0)^4)/(abs((4255.8340196700533106975286133394*(ter^(1/2) - 1.0))/(ter^(1/2) + 1.0) - (3.7944691163519454351367673552897*((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)*(ter^(1/2) - 1.0)^2)/((ter - 0.3749799255740448589158120284992)^(1/2)*(ter^(1/2) + 1.0)^2))^2*abs(ter - 0.3749799255740448589158120284992)*abs(ter^(1/2) + 1.0)^4) - 1.0) - 0.087242087665028683172453603593576*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)^2*((ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591) - (1.4503431430952670170858361997331*((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806))/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 0.087242087665028683172453603593576*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) - 1.0)*(((ter - 0.3749799255740448589158120284992)^(1/2) - 0.79058211112189669123040403064806)/((ter - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806) + 1.0)*(0.74995985114808971783162405699841/(ter - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978))^2 == -9.4836197000000002077513272524811;
dsol=vpasolve(d);
This expression's solution is zero as returned by vpasolve(). When RHS of the expression is positive(9.4836197000000002077513272524811), it is returning a non-zero solution. Why is it like that?

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回答（2 个）

Walter Roberson
Walter Roberson 2018-7-13
0 is not a solution for d. One of the sub-expressions contains
(ter - 0.3749799255740448589158120284992)^(1/2)/ter - 0.47430863954399316018140098094591)
which is a division by 0 when ter is 0.
Perhaps you intended the division to be by (ter - 0.47430863954399316018140098094591)
  1 个评论
Walter Roberson
Walter Roberson 2018-7-13
If you plot lhs(d)-rhs(d) you will see that the plot goes to infinity as it approaches zero from either side, and that it never goes below approximately 9.6 . The left side of the equation approaches 1/ter^2 as ter approaches 0... so no solution for that right hand side.

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Sandra Maria Cherian
Actually, whenever I use a positive value on rhs of the expression 'd', it returns a solution.Even if I use 9.48 instead of -9.48, it gives a non-zero value. Why the function is not working for negative values?
  2 个评论
Sandra Maria Cherian
Sandra Maria Cherian 2018-7-16
I solved the equation by putting the equation in this way: d=lhs.^2==rhs.^2 I am surprised, why matlab is not able to give solution otherwise.
Walter Roberson
Walter Roberson 2018-7-16
The minimum on the left hand side is about 0.46585895 approximately, at approximately ter = -0.6767 . If you were to try to solve for the right hand side being 0.4 (for example) then you would still have a problem.

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