Let f(x) = 2x5 + 7x2 − 5x − 3. Find the slope of the graph at x = −3, that is f′(−3).
Derivatives worksheet with answers
1.Easy
f(x) = 2x5 + 7x2 − 5x − 3x = −3
f′(−3) =
2.Easy
Let f(x) = −3x5 − 2x2 − 5x − 7. Find the slope of the graph at x = −2, that is f′(−2).
f(x) = −3x5 − 2x2 − 5x − 7x = −2
f′(−2) =
3.Medium
Let f(x) = x2·e0.5x. Find f′(2).
f(x) = x2·e0.5xx = 2
f′(2) =
4.Medium
Let f(x) = (2x − 3)3. Find f′(2).
f(x) = (2x − 3)3x = 2
f′(2) =
5.Hard
The tangent line to f(x) = −x2 − 2x at x = −2 crosses the y-axis at y = b. Find b.
f(x) = −x2 − 2xx = −2
b =
6.Hard
The tangent line to f(x) = −x2 + 5x + 5 at x = 1 crosses the y-axis at y = b. Find b.
f(x) = −x2 + 5x + 5x = 1
b =
Answer key
- 1. f′(−3) = 763
- 2. f′(−2) = −237
- 3. f′(2) = 16.31
- 4. f′(2) = 6
- 5. b = 4
- 6. b = 6
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