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Matrix multiplication and trace can any body help me

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vikas Kumar
vikas Kumar on 24 Aug 2020
Edited: Matt J on 24 Aug 2020
Hi,
I have a A(5X5) matrix and a B(5X5X10) matrix. I want to compute Trace(A*B(:,:,1))+Trace(A*B(:,:,2)) +…+Trace(A*B(:,:,10))
Any direct/efficient way of doing this without the for loop?
Thank you very much,

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Answers (1)

Matt J
Matt J on 24 Aug 2020
Edited: Matt J on 24 Aug 2020
result=sum( A.'.*sum(B,3) ,'all')

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