Logistic Map Derivative

Problem

The logistic map is f(x) = r * x * (1 - x). Its derivative is f'(x) = r * (1 - 2x), which controls whether nearby orbits converge or diverge.

Given the parameter r and the state x, return f'(x).

Hint

Differentiate r * x * (1 - x) with respect to x.

case 1

in: [4,0.5]

expected: 0

case 2

in: [3,0.25]

expected: 1.5

case 3

in: [2,0]

expected: 2

case 4

in: [1,0.5]

expected: 0

case 5

in: [4,0]

expected: 4

Starter codePython

def logistic_map_derivative(r, x):
    # Your code here
    pass

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