The region under y = 3x 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 = 3x0 ≤ x ≤ 3
V =
2.Easy
Evaluate I = ∫₀3 x·e−x dx.
∫₀3 x·e−x dx
I =
3.Medium
Evaluate I = ∫₁2 x·ln x dx.
∫₁2 x ln x dx
I =
4.Medium
The region under y = √(2x) from x = 0 to x = 4 is rotated about the x-axis. Find the volume V of the solid (a paraboloid).
y = √(2x)0 ≤ x ≤ 4
V =
5.Hard
Evaluate I = ∫₀2 x²·eˣ dx.
∫₀2 x²eˣ dx
I =
6.Hard
Find the area A of the region enclosed by y = 2x2 and y = 2x.
y = 2x2y = 2x
A =
Answer key
- 1. V = 254.5
- 2. I = 0.8009
- 3. I = 0.6363
- 4. V = 50.27
- 5. I = 12.78
- 6. A = 0.3333
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