Differentiate f(x) = x⁴.
- Bring down the exponent 4.
- Reduce the exponent to 3.
Answer: f′(x) = 4x³
Differentiate functions exactly, state necessary domains and check the resulting symbolic expression.
Learn the skill
A derivative gives an instantaneous rate of change. For a power x^n, the power rule is d/dx(x^n) = n x^(n−1), wherever the rule applies. Differentiate a polynomial term by term, keeping each coefficient.
Answer: f′(x) = 4x³
Answer: g′(x) = 6x − 5
Answer: 12
Solve these before opening the answers. The printable sets below give you more practice.
1. Differentiate f(x) = 2x³ + 4x − 9.
f′(x) = 6x² + 4
Apply the power rule to each term and drop the constant.
2. Find the slope of y = x² at x = 5.
10
The derivative is 2x; at x = 5 it is 10.
Manipulate algebraic expressions and understand functions, limits and derivative notation.
These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
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