solving non-linear equation

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)

Answer 1

[Walter Roberson]

Go directly for vpasolve instead of solve as it is not feasible to expect a closed form solution for that.

[friet]

I didn't get your answer. Can you please elaborate a little bit

[Walter Roberson]

solvx = vpasolve(eqn,x);