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Solve system of nonlinear equations
I want to solve these equations with T2, T3, T4, T5 unknowns. all the other variables is predefined syms T2 T3 T4 T5 eqn1=((T...
4 years 前 | 0 个回答 | 0
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ODE error message "Error using exist The first input to exist must be a string scalar or character vector"
it should appear like this. where is the error T=2146; a=(101.325/(8.314*T))*10^-3; o2=16.8*a; n2=717*a; o=0.245*a; h2o=1...
ODE error message "Error using exist The first input to exist must be a string scalar or character vector"
it should appear like this. where is the error T=2146; a=(101.325/(8.314*T))*10^-3; o2=16.8*a; n2=717*a; o=0.245*a; h2o=1...
6 years 前 | 0
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ODE error message "Error using exist The first input to exist must be a string scalar or character vector"
this is my code syms no(k1,k2,k3,k_1,k_2,k_3,o2,n2,o,h2o,oh,h,t) n=(k1*o*n2+k_2*no*o+k_3*no*h)/(k_1*no+k2*o2+k3*oh); eqn1=k1*...
6 years 前 | 2 个回答 | 0
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Index in position 2 exceeds array bounds (must not exceed 6). heat transfer PDE finite difference
I am trying to solve this PDE with finite difference with boundry conditions x=1,T=0 ' x=0,dT/dx=0 ' y=0,dT/dy=0 ' y=1, dT/dy=-...
6 years 前 | 1 个回答 | 0
1
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Calculate area between unknown curve and straight line
How can I calculate areas between these unknown curve and line, see image. The line is not zero. How can I use trapz in this c...
7 years 前 | 2 个回答 | 0
