Linear Algebra, Numpy, Numpy Tutorial, Data Science, Python.
np.array([[1,2,3],[4,5,6],[7,8,9]]) x = np.array([2,6,9]) np.matmul(A,x) array([ 41, 92, 143]) # Lets try a matrix and a vector that dont have the right combination of rows and columns. A = np.array([[1,2,3],[4,5,6],[7,8,9]]) x = np.array([1,2]) try: np.matmul(A,x) except ValueError: dims_right =