MATLAB: Why does Matlab not expand(abs(a-b)^2)

expandMATLABvectors

Wolfram alpha shows: a^2 -2*a*b+b^2

Best Answer

>> a=complex(rand,rand)
a =
         0.0975404049994095 +     0.278498218867048i
>> b=complex(rand,rand)
b =
          0.546881519204984 +     0.957506835434298i
>> abs(a-b)^2
ans =
         0.662960138288077
>> a^2-2*a*b+b^2
ans =
         -0.259145264457063 +     0.610212976647027i
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