The region under y = 0.5x from x = 0 to x = 3 is rotated about the x-axis. Find the volume V of the solid (a cone).
Integrals worksheet with answers
1.Easy
y = 0.5x0 ≤ x ≤ 3
V =
2.Easy
Evaluate I = ∫−21 (−3x3 + 2x) dx.
f(x) = −3x3 + 2x[−2, 1]
I =
3.Medium
Evaluate I = ∫₁2.5 x·ln x dx.
∫₁2.5 x ln x dx
I =
4.Medium
The region under y = √(4x) from x = 0 to x = 3 is rotated about the x-axis. Find the volume V of the solid (a paraboloid).
y = √(4x)0 ≤ x ≤ 3
V =
5.Hard
Find the area A of the region between the parabola y = 4 − x² and the x-axis.
y = 4 − x²
A =
6.Hard
Evaluate I = ∫₀3 x²·eˣ dx.
∫₀3 x²eˣ dx
I =
Answer key
- 1. V = 7.069
- 2. I = 8.25
- 3. I = 1.551
- 4. V = 56.55
- 5. A = 10.67
- 6. I = 98.43
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