how to use parallel computing

how to use parallel computing for the given code

syms M; 
L = 5.0;A = 1.6;P = 0.0; w = 0.4195; R = 25; 
PBAR = P/(pi*w*R); 
e1 = A^3 - L*A^2.*(sqrt(M.^2-1) + M.^2.*acos(1./M)) - PBAR; 
e2 = L*A^2/2*(sqrt(M^2-1) + (M^2-2)*acos(1/M)) + 4*L^2*A/3*(sqrt(M^2-1)*acos(1/M)-M+1)-1; 
solution{1}=feval(symengine, 'numeric::fsolve',e2-e1,'M')

i tried with

ms.UseParallel = 'always'

but didnt work (out of 4 cores, 2 cores are only loaded & 2 cores are free)

Answer 1

[Walter Roberson]

MuPad does not use parallel computing the same way (if at all)

F = matlabFunction(e2 -  e1);
fzero(F, rand)

The rand is just to supply a starting point.