How to multiply row of matrix A with column of matrix B?

A is 121 x 36 matrix

B is 36 x 121 matrix

The result C should be 121 x 1 matrix.

May I know how should I multiply a row of A with col of B? so that resulting matrix is 121 X 1.

No loops please.

[the cyclist]

One row of A is 36 elements. One column of B is 36 elements. It is absolutely unclear how to get a 121x1 matrix from that.

Please explain more clearly what you need. Perhaps use a smaller example (e.g. 4x3) to show exactly what the input and output should be.

[Adam Danz]

Prehaps the goal is the multiply a col of A by row of B.

Answer 1

[James Tursa]

Maybe this is what you want?

C = sum(A .* B.',2)

Answer 2

[the cyclist]

If @Adam Danz is correct that you actually want to multiply all the elements of one column of A with one row of B, then

% Define A and B
A = rand(121,36);
B = rand(36,121);

% Which row and column?
colA = 2;
rowB = 3;

% Multiply the selected row and column
V = A(:,colA) .* B(rowB,:).'; % <----- Note that I used the transpose here 

% Check the size of V
size(V)

ans = 1×2

121 1