python programming

Question

Which of the following statements is false?

	Normally, the arithmetic operations on arrays require as operands two arrays of the same size and shape.
	When one operand is a single value, called a scalar, NumPy performs the element-wise calculations as if the scalar were an array of the same shape as the other operand, but with that scalar value in all its elements.
	If numbers is a five-element integer array, numbers * 2 is equivalent to:	numbers * [2, 2, 2, 2, 2]
	Broadcasting can only be applied between arrays of the same size and shape, enabling some concise and powerful manipulations.

Answer 1

The last answer choice is false. Generally, the arrays must be the same shape. This is true. This is what the first answer choice says. The last answer choice says that arrays must be the same shape, which is untrue. For instance, a 4x3 array can perform element-wise operations on a 4x3xn array and it will operate on each level from 0 to `n`.