# solving non-linear equation

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friet 2017년 3월 26일
댓글: Walter Roberson 2017년 3월 26일
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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### 답변(1개)

Walter Roberson 2017년 3월 26일
편집: Walter Roberson 2017년 3월 26일
Go directly for vpasolve instead of solve as it is not feasible to expect a closed form solution for that.
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Walter Roberson 2017년 3월 26일
solvx = vpasolve(eqn,x);

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