Derivatives worksheet with answers

Free printable Derivatives worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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1.Easy
xyx = 1

Let f(x) = 2x4 + 9x2 − 8x + 9. Find the slope of the graph at x = 1, that is f′(1).

f(x) = 2x4 + 9x2 − 8x + 9x = 1
f′(1) =
2.Easy
xyx = 1

Let f(x) = 2x5 + 6x2 + 2x + 8. Find the slope of the graph at x = 1, that is f′(1).

f(x) = 2x5 + 6x2 + 2x + 8x = 1
f′(1) =
3.Medium
xyx = 2

Let f(x) = x·sin(3x), with x in radians. Find f′(2).

f(x) = x·sin(3x)x = 2 rad
f′(2) =
4.Medium
xyx = 1

Let f(x) = ln(x2 + 4). Find f′(1).

f(x) = ln(x2 + 4)x = 1
f′(1) =
5.Hard
xy

Let f(x) = x3 − 3x2 − 4. Find the x-coordinate x of the local minimum.

f(x) = x3 − 3x2 − 4
x =
6.Hard
xyx = 1

The tangent line to f(x) = −x2 + x − 6 at x = 1 crosses the y-axis at y = b. Find b.

f(x) = −x2 + x − 6x = 1
b =

Answer key

  1. 1. f′(1) = 18
  2. 2. f′(1) = 24
  3. 3. f′(2) = 5.482
  4. 4. f′(1) = 0.4
  5. 5. x = 2
  6. 6. b = −5

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