Let f(x) = 2x5 + 3x2 + 5x − 2. Find the slope of the graph at x = 2, that is f′(2).
Derivatives worksheet with answers
1.Easy
f(x) = 2x5 + 3x2 + 5x − 2x = 2
f′(2) =
2.Easy
Let f(x) = −3x5 − 8x2 − 5x − 3. Find the slope of the graph at x = 1, that is f′(1).
f(x) = −3x5 − 8x2 − 5x − 3x = 1
f′(1) =
3.Medium
Let f(x) = ln(x2 + 1). Find f′(1).
f(x) = ln(x2 + 1)x = 1
f′(1) =
4.Medium
Let f(x) = x·ex. Find f′(2).
f(x) = x·exx = 2
f′(2) =
5.Hard
The tangent line to f(x) = 3x2 + 4x − 6 at x = 2 crosses the y-axis at y = b. Find b.
f(x) = 3x2 + 4x − 6x = 2
b =
6.Hard
The tangent line to f(x) = 3x2 + 4x − 5 at x = 2 crosses the y-axis at y = b. Find b.
f(x) = 3x2 + 4x − 5x = 2
b =
Answer key
- 1. f′(2) = 177
- 2. f′(1) = −36
- 3. f′(1) = 1
- 4. f′(2) = 22.17
- 5. b = −18
- 6. b = −17
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