Reference: https://en.wikipedia.org/wiki/Fast_inverse_square_root Accuracy: https://en.wikipedia.org/wiki/Fast_inverse_square_root#Accuracy Compute the fast inverse ...

We’ve seen that Python provides us with quite a few conveniences “right out of the box.” Among these are built-in functions, that we as programmers can use—and reuse—in our code with little effort.

Investigate whether the computation time of sqrt() varies with the size of the input. Measure the computation time for math.sqrt(), numpy.sqrt() and (** 0.5). ## How to measure computation time？