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