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Matrix multiplication using W|A ?

Posted 5 years ago

I try to compute matrix multiplication for matrix with entries likes 1/sqrt(2) But any my tries finished with error (wolfram can not understand me....) I tried in W|A:

{{1/Sqrt[2]}, {1/Sqrt[2]}}.{{1/Sqrt[2], 1/Sqrt[2],0}}

I need matrix 1x3 but 3x1 is correct {{1/Sqrt[2], 1, 2}}

Please give me some idea about it

POSTED BY: Denys Porplenko
4 Replies
Posted 5 years ago

Ok I want to compute

{{1/Sqrt[2]}, {1/Sqrt[2]}}.{{1/Sqrt[2], 1/Sqrt[2],0}}

but Wolfram says me wrong dimensions I want to compute 21 . 13 matrices

POSTED BY: Updating Name

Woiks for me.

In[3]:= {{1/Sqrt[2]}, {1/Sqrt[2]}}.{{1/Sqrt[2], 1/Sqrt[2], 0}}

Out[3]= {{1/2, 1/2, 0}, {1/2, 1/2, 0}}
POSTED BY: Daniel Lichtblau

What exactly is your problem? Your post is not understandable!

POSTED BY: Hans Dolhaine

Ok I want to compute

{{1/Sqrt[2]}, {1/Sqrt[2]}}.{{1/Sqrt[2], 1/Sqrt[2],0}}

but Wolfram says me wrong dimensions I want to compute 2*1 \cdot 1*3 matrices


POSTED BY: Denys Porplenko
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