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Math Practice

Power Rule Practice Problems

Rewrite every term as a power of x, bring the exponent down, subtract one, and differentiate polynomials term by term. Constants have derivative zero.

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MPhil in Mathematics, Founder of Mathovia
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Power Rule Practice Problems

These problems follow the power rule for derivatives lesson. They start with single powers and build up to polynomials, roots and tangent slopes.

The rules you need

  1. Power rule: for any real .
  2. Constant rule: the derivative of a constant is 0.
  3. Constant multiple and sum rules: differentiate term by term and keep the coefficients.
  4. Rewrite first: , . Expand products and split fractions before differentiating.

Common mistakes to watch for

  • Subtracting 1 from a negative exponent wrongly. , not .
  • Forgetting to rewrite roots. The power rule only sees .
  • Keeping the constant. The derivative of is 0.
  • Multiplying derivatives of factors. Expand first, or use the chain rule later.

Frequently Asked Questions

How do I type exponents?+

Use ^ for powers, with brackets around negative or fractional exponents: x^7, x^(-4), x^(2/3). Equivalent forms, such as -4/x^5 for -4x^(-5), are accepted.

Should I simplify my answer?+

You don't have to. Any form that equals the correct derivative is marked right, so 0.5x^(-1/2) and 1/(2*sqrt(x)) both work.

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