Evaluate I = ∫₀3 x·e−x dx.
Integrals worksheet with answers
1.Easy
∫₀3 x·e−x dx
I =
2.Easy
Evaluate I = ∫−2−1 (3x2 + 5) dx.
f(x) = 3x2 + 5[−2, −1]
I =
3.Medium
The region under y = x from x = 0 to x = 3 is rotated about the x-axis. Find the volume V of the solid (a cone).
y = x0 ≤ x ≤ 3
V =
4.Medium
Evaluate I = ∫02 2x·(x² + 1)2 dx.
f(x) = 2x·(x² + 1)2[0, 2]
I =
5.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 =
6.Hard
Evaluate I = ∫₀1.5 x²·eˣ dx.
∫₀1.5 x²eˣ dx
I =
Answer key
- 1. I = 0.8009
- 2. I = 12
- 3. V = 28.27
- 4. I = 41.33
- 5. V = 407.2
- 6. I = 3.602
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