Element-Wise Arithmetic
Operations that are computedelement-wise mean that the arithmetic operation is applied to one pair of elements from each array at a time.
Both arrays must have the same length.
a = np.array([4, 5, -1])
b = np.array([2, 3, 2])
a + b # array([6, 8, 1])
a / b # array([ 2., 1.66666667, -0.5])
a ** 2 + b ** 2 # array([20, 34, 5])