Matrix-Vector Product

Multiply an $m\times nm\backslash times\; n$ matrix by a length-$nn$ vector by computing each output entry as the dot product of one matrix row with the vector.

Implement solve(A, x).

Returns. Return a NumPy array of length $mm$.

Examples

Example 1

Input:

solve([[1.0, 2.0], [3.0, 4.0]], [1.0, 1.0])

Output:

[3.0, 7.0]

Example 2

Input:

solve([[0.0, 1.0, 0.0]], [5.0, 6.0, 7.0])

Output:

[6.0]