.* and * give me different answer

2019 7 28
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更新时间：2019 7 28
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F = [1.5 0.2; 0.2 1.3];
I = eye(2);
E = 1/2*(F'*F-I);
E =
0.6450 0.2800
0.2800 0.3650
E = 1/2*(F'.*F-I);
E =
0.6250 0.0200
0.0200 0.3450
Why did * operates differ from .*? Can someone show the math behind the .* operator? When I was doing it by hand I got the answer same as * operator.

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amin ya
amin ya 2019-7-28

1 个投票

* % matrix multiplication
.* % element wise multiplication

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