Power Function Calculator

Evaluate a power function f(x) = a·xⁿ.

f(x) 128

Formula: f(x) = a · xⁿ

Step-by-step with your numbers:

1. Values used:

2. Coefficient a = 2

3. Power n = 3

4. x = 4

6. f(x) = 128

Did we solve your problem today?

A power function raises the variable to a fixed power and scales it by a coefficient.

The math behind it

f(x) = a·xⁿ. Unlike an exponential function, here the variable is the base and the exponent is fixed.

f(x) = 2x³ at x = 4 → 2·64 = 128.

Power function vs exponential?

Power: variable base, fixed exponent (xⁿ). Exponential: fixed base, variable exponent (bˣ).