Let f(x) = 2x3 − x2 + x + 2. Find the slope of the graph at x = −3, that is f′(−3).
Derivatives worksheet with answers
1.Easy
f(x) = 2x3 − x2 + x + 2x = −3
f′(−3) =
2.Easy
Let f(x) = −x3 + 7x2 − 2x − 1. Find the slope of the graph at x = −3, that is f′(−3).
f(x) = −x3 + 7x2 − 2x − 1x = −3
f′(−3) =
3.Medium
Let f(x) = x3·e2x. Find f′(2).
f(x) = x3·e2xx = 2
f′(2) =
4.Medium
Let f(x) = (2x − 3)3. Find f′(0).
f(x) = (2x − 3)3x = 0
f′(0) =
5.Hard
The tangent line to f(x) = x2 + 5x + 1 at x = −2 crosses the y-axis at y = b. Find b.
f(x) = x2 + 5x + 1x = −2
b =
6.Hard
The tangent line to f(x) = 3x2 − x − 5 at x = −1 crosses the y-axis at y = b. Find b.
f(x) = 3x2 − x − 5x = −1
b =
Answer key
- 1. f′(−3) = 61
- 2. f′(−3) = −71
- 3. f′(2) = 1529
- 4. f′(0) = 54
- 5. b = −3
- 6. b = −8
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