Double sum - vector (matrix) solution

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Mikl Nik
Mikl Nik 2020-11-30
评论： Mikl Nik 2020-12-3
Hi!
I want to calculate the expression , where C and F - matrix (n x m). How can I do it without loops?
Thank you for your answers!

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James Tursa
James Tursa 2020-11-30
编辑：James Tursa 2020-11-30
result = sum(C(:).*F(:));
or for later versions of MATLAB
result = sum(C.*F,'all');
This all assumes that the actual indexing starts at 1, not 0 as your formula above is written, since MATLAB uses 1-based indexing.

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