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matlabsymbolic-math

Matlab symbolic

I am trying to compare two simple expressions using Matlab symbolic toolbox. For some reason, the code returns 0. Any idea ?

syms a b c
A = (a/b)^c
B = a^c/b^c
isequal(A,B)
Solution

  • In general what you wrote isn't true, under the right "assumptions" it becomes true: for example, assuming c is an integer you can trick MATLAB into expanding A

    clc; clear all;
syms a 
syms b 
syms c integer
A = (a/b)^c;
B = simplify((a^c)/(b^c));
disp(isequal(A,B));
disp(A);
disp(B);

    1

    a^c/b^c
    a^c/b^c