How to solve many equations at once? (Not a system but just multiple separate equations)

Question

atharva aalok 2021-9-16

0
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https://ww2.mathworks.cn/matlabcentral/answers/1454214-how-to-solve-many-equations-at-once-not-a-system-but-just-multiple-separate-equations

回答： KSSV 2021-9-16

I have a vector of equations in symbollic form instead of using a for loop to solve I want to solve them all at once for speed.

PmSol = linspace(0, .5, 1000);
% after some code in between...
syms x Pm
assume(x, 'real');
eqn1 = 0.5*(x+1)*((1-x*x)^(0.5)) == Pm;
    
Pm_val = PmSol;
% get different equations for each value of the parameter Pm
eqn = subs(eqn1, Pm, Pm_val);
% the above gives a column of 1000 equations
% The Problem: I want to solve each equation and get the corresponding
% solutions in general I know already that for Pm in this range there will
% be 2 solutions for each equation.
% This does NOT work
solns = solve(eqn, x);
disp(solns);