When I try to solve this equation, this message appears, how can I solve this problem?

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isra sahli
isra sahli on 9 Oct 2021
Commented: isra sahli on 9 Oct 2021
k=2.7904;
R=0.20491;
syms a
Eqn=a./((1+(2.*k(1-a)))+((1+(2.*k./3)).*(sqrt(3.*(1-a)))))==R;
a = vpasolve(Eqn, a);
Invalid indexing or function definition. Indexing must follow MATLAB indexing.
Function arguments must be symbolic variables, and function body must be sym
expression.

Accepted Answer

David Hill
David Hill on 9 Oct 2021
Edited: David Hill on 9 Oct 2021
k=2.7904;
R=0.20491;
syms a
Eqn=a./(1+(2*k*(1-a))+(1+(2*k/3)).*(sqrt(3*(1-a))))==R;%messed equation up (need k*(1-a))
s = vpasolve(Eqn, a);

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