EasyCalculusca-325

Scalar Chain Rule Product

Problem

For the composition h(x) = g(f(x)), the derivative at a point is g'(f(x)) * f'(x).

Given the numeric values dfdx and dgdu, return the chain rule product.

Hint

Multiply the outer derivative by the inner derivative.

case 1

in: [2,3]

expected: 6

case 2

in: [-1,4]

expected: -4

case 3

in: [0,5]

expected: 0

Starter codePython

def scalar_chain_rule_product(dfdx, dgdu):
    # Your code here
    pass

3 test cases · run your code against them in the editor