Matrix multiplication using W|A ?

Questions
,
1

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

2

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

3

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

4

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

5

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}}