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Re: Apply function to vector

From: James Sherman Jr.
Subject: Re: Apply function to vector
Date: Mon, 20 Jun 2011 08:05:21 -0400

error: for A^b, A must be square

Mathematically, A^b means the power of the matrix, so for example, A^3 is A*A*A.  For this operation, you do need A to be square for the matrix multiplication to make sense.

If you want to take the power of each element in the matrix, you need to put a period "." before the carat to indicate that you want the power of each element, A.^3 will take each element in A and cube them.  This is the element-wise operations that you were reading about.

Hope this helps,

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