The region under y = √(x) from x = 0 to x = 2 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 ≤ 2
V =
2.Easy
Evaluate I = ∫₀0.5 x·ex/2 dx.
∫₀0.5 x·ex/2 dx
I =
3.Medium
Evaluate I = ∫₀1 x·sin x dx (x in radians).
∫₀1 x·sin x dx
I =
4.Medium
Evaluate I = ∫02 e0.5x dx.
f(x) = e0.5x[0, 2]
I =
5.Hard
Find the area A of the region enclosed by y = 2x2 and y = 3x.
y = 2x2y = 3x
A =
6.Hard
Find the area A of the region between the parabola y = 1 − x² and the x-axis.
y = 1 − x²
A =
Answer key
- 1. V = 6.283
- 2. I = 0.1479
- 3. I = 0.3012
- 4. I = 3.437
- 5. A = 1.125
- 6. A = 1.333
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