The region under y = √(x) from x = 0 to x = 4 is rotated about the x-axis. Find the volume V of the solid (a paraboloid).
Integrals worksheet with answers
1.Easy
y = √(x)0 ≤ x ≤ 4
V =
2.Easy
Evaluate I = ∫₀1.5 x·ex/2 dx.
∫₀1.5 x·ex/2 dx
I =
3.Medium
Evaluate I = ∫02 e0.5x dx.
f(x) = e0.5x[0, 2]
I =
4.Medium
Evaluate I = ∫01 ex dx.
f(x) = ex[0, 1]
I =
5.Hard
Evaluate I = ∫₀2 x²·eˣ dx.
∫₀2 x²eˣ dx
I =
6.Hard
The region between the line y = 6x and the parabola y = 2x² is rotated about the x-axis. Find the volume V of the solid.
y = 6xy = 2x²
V =
Answer key
- 1. V = 25.13
- 2. I = 1.883
- 3. I = 3.437
- 4. I = 1.718
- 5. I = 12.78
- 6. V = 407.2
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