solving non-linear equation

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friet
friet 2017-3-26
评论： Walter Roberson 2017-3-26
Hi
I am solving for x in this equation.
where J1 is Bessel function of first kind order one. Below s my code, however i am notsure if this is the right way to solve an equation in matlab. can anyone please help me to check my code.
Thanks
clear all
syms x
b=371.05*10^-6;
num=sqrt(-8*b*abs(x));
den=sqrt(-2*b*abs(x));
eqn = 1.4*sqrt((besselj(1,num))/(den))==x;
solvx = solve(eqn,x);
vpa(solvx)

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回答（1 个）

Walter Roberson
Walter Roberson 2017-3-26
编辑：Walter Roberson 2017-3-26
Go directly for vpasolve instead of solve as it is not feasible to expect a closed form solution for that.
  2 个评论
friet
friet 2017-3-26
I didn't get your answer. Can you please elaborate a little bit

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