If ∫xeˣdx=eˣ(x−1)+C, then ∫₀¹xeˣdx equals:
- 0
- 1
- e−1
- 1−e
Show answer and explanation
Answer: B. 1
[eˣ(x−1)]₀¹ = 0−(−1) = 1.
Practise 39 real Federal Board questions on Integration from 2023 to 2026. See the answer and explanation as soon as you answer.
Integration is one of the 14 main chapters in our Federal Board FSC Mathematics question bank (12th class), and about 8% of its real questions come from it. Tayyari Karo has 39 real questions on this chapter from 2023 to 2026; 15 are multiple choice and marked instantly, and the rest are short and long questions with a model answer. By difficulty: 18 medium, 12 hard, 9 easy.
Work through the questions below, then open the explanation for each one. Redo the ones you missed a few days later.
These are real past-paper questions. Think of your answer first, then open the explanation.
If ∫xeˣdx=eˣ(x−1)+C, then ∫₀¹xeˣdx equals:
Answer: B. 1
[eˣ(x−1)]₀¹ = 0−(−1) = 1.
Average value of f(x)=x² on [0,3] is:
Answer: D. 3
(1/3)∫₀³x²dx=(1/3)(9)=3.
If 2∫₀³xdx=2k−3, then the value of 'k' is:
Answer: D. 6
2×(9/2)=9=2k−3 ⇒ k=6.
What evaluates ∫₀^(π/2) Cosx·e^(Sinx) dx?
Answer: D. e−1
Let u=Sinx, du=Cosx dx. ∫₀¹eᵘdu = e¹−e⁰ = e−1.
If 2∫₀²(x−k)dx=1, then what is the value of k?
Answer: A. 3/4
∫₀²(x−k)dx = 2−2k. Setting 2(2−2k)=1 gives 4−4k=1, so k=3/4.
∫₋₁¹ (x + |x|) dx = ...
Answer: C. 1
∫₋₁¹x dx = 0 (odd function). ∫₋₁¹|x|dx = 2∫₀¹x dx = 1. Sum = 0+1 = 1.
Evaluate ∫sin²x dx
sin²x = (1−cos2x)/2
∫(1−cos2x)/2 dx = x/2 − sin2x/4 + C
= x/2 − (sin2x)/4 + C
Evaluate ∫dx/[x²√(x²−9)]
Standard result: ∫dx/[x²√(x²−a²)] = √(x²−a²)/(a²x) + c, with a=3
= √(x²−9)/(9x) + c
| Session | Questions |
|---|---|
| 2026 Annual | 8 |
| 2025 1st Annual | 9 |
| 2025 2nd Annual | 5 |
| 2024 Annual | 8 |
| 2023 Annual | 9 |
39 real Federal Board (FBISE) Mathematics questions on Integration from 2023 to 2026, for 12th class. Each one shows the session it came from.
No. We could not find an official FBISE marking scheme for these papers, so the answers and explanations are written by Tayyari Karo for practice. Check anything important with your teacher or textbook.
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