Scalar from Two Matrix?
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If a 3x3 matrix is S=[30 0 10; 0 30 10; 10 10 30] , and you know P=30.
The formula: W^2 = IISII^2 - P^2.
P is a scalar, and to count this formula you need S also to be scalar.
I have multiple S.*S or S.^2, and I still got 3x3 matrix. And that was pretty expected.
Anyhow, my point is, how can I get a scalar from IISII^2? Is that even possible?
Love
Regina
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Richard Brown
2012-4-30
I think it's a norm. Try squaring norm(S). And if you don't know what that means, or which norm to use, you have bigger problems...
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