The region under y = x from x = 0 to x = 1 is rotated about the x-axis. Find the volume V of the solid (a cone).
Integrals worksheet with answers
1.Easy
y = x0 ≤ x ≤ 1
V =
2.Easy
Evaluate I = ∫14 (3x2 − x − 1) dx.
f(x) = 3x2 − x − 1[1, 4]
I =
3.Medium
Evaluate I = ∫01 2x·(x² + 1)2 dx.
f(x) = 2x·(x² + 1)2[0, 1]
I =
4.Medium
Evaluate I = ∫14 1/x dx.
f(x) = 1/x[1, 4]
I =
5.Hard
Find the area A of the region enclosed by y = 2x2 and y = x.
y = 2x2y = x
A =
6.Hard
The region between the line y = 2x and the parabola y = x² is rotated about the x-axis. Find the volume V of the solid.
y = 2xy = x²
V =
Answer key
- 1. V = 1.047
- 2. I = 52.5
- 3. I = 2.333
- 4. I = 1.386
- 5. A = 0.04167
- 6. V = 13.4
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