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Can I multiply a Vector with a Matrix?

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Edoardo
Edoardo 2012-10-29
Hi;
Sorry for my english. I've a big problem, I want multiply a vector by a matrix:
ES: A=< 1x1250 double >; B= is a matrix < 421x421 double >;
C=A*B; ??? Error using ==> Inner matrix dimensions must agree
or if
C=A.*B; ??? Error using ==> times Matrix dimensions must agree.
Please help me!!! Thanks
  1 个评论
Matt J
Matt J 2012-10-29
编辑：Matt J 2012-10-29
What are the dimensions of B and do you want element-wise multiplication C(i)=A(i).*B(i) or do you want matrix-sense multiplication?

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采纳的回答

Jan
Jan 2012-10-29
In the expression A*B the number of columns of A must equal the number of rows of B.

更多回答（1 个）

Matt J
Matt J 2012-10-29
In the expression A.*B, the matrices A and B must have the same number of rows and columns.

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