If given a list of numbers, say, a = [1, 0.5, 0.5, 0.5, 0.5], and a numpy array M which is generated by np.arange(5*5, dtype=float).Reshape (5,5), where np is considered as an alias of numpy. You need to convert the list a to a numpy array arr first, and then print the following results on screen:

1. dot multiplication of M and arr

2. matrix multiplication of M and arr