Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Suppose I have a nxm matrix A and nx1 column-vector B. I perform an inner product using transpose(A) * B. This works fine.

However, I would like to not have to transpose A and still get the same result.

Is there a way to get the same result without transposing A (possibly with a transpose of B?)

My linear algebra skills aren't too great. Hoping to get help from the experts here.

share|improve this question
1  
transpose( transpose(B) * A ) –  ACARCHAU Jan 10 '13 at 4:31
1  
What do you mean by "inner product"? Does $A^TB=(B^TA)^T$ help? –  Jonas Meyer Jan 10 '13 at 4:32
    
That's it @ACARCHAU. Thanks to you both. Mind posting as an answer so I can accept and close the question? –  Clayton Stanley Jan 10 '13 at 4:35
add comment

1 Answer 1

From a comment, $A^TB=(B^TA)^T$

share|improve this answer
    
It would be better to write this using MathJax (LaTex) as Jonas did in his answer. Regards –  Amzoti Jan 10 '13 at 22:55
    
Cool! I didn't know that one could embed LaTeX in StackExchange posts. –  Clayton Stanley Jan 10 '13 at 23:33
    
Please see MathJax and FAQ for further details. The MathJax displaying of math is lovely! Regards –  Amzoti Jan 10 '13 at 23:50
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.