Free Calculator Tool

Derivative Calculator

Find the derivative of any polynomial function with step-by-step power rule application.

Want to solve ANY math problem? Just take a screenshot.

Math.Photos handles algebra, calculus, geometry, statistics, and more — all from a photo.

Install Math.Photos Free

Find f'(x)

How It Works

The Power Rule

The most fundamental derivative rule: d/dx [xⁿ] = n·xⁿ⁻¹. Multiply by the exponent, then reduce the exponent by 1. This works for any real exponent.

Constant Rule

The derivative of any constant is 0. Constants don't change, so their rate of change is zero.

Sum/Difference Rule

The derivative of a sum (or difference) equals the sum (or difference) of derivatives. This lets us differentiate term by term.

Why Derivatives Matter

Derivatives measure rates of change. They're used in physics (velocity, acceleration), economics (marginal cost), and everywhere optimization is needed.

Related Tools

Need more than a derivative calculator?

Math.Photos solves any math problem from a screenshot — algebra, calculus, geometry, statistics, and more. With step-by-step explanations.

Install Math.Photos — It's Free