The area under the curve y = x² from x = 0 to x = 1 is?
A
1/3
B
1/2
C
1/4
D
2/3
Analysis & Theory
Area = ∫₀¹ x² dx = [x³/3]₀¹ = 1/3.
The area bounded by y = x and x-axis from x = 0 to x = 2 is?
A
2
B
4
C
3
D
1
Analysis & Theory
Area = ∫₀² x dx = [x²/2]₀² = 2.
The area enclosed between y = x and y = x² (0 ≤ x ≤ 1) is?
A
1/6
B
1/3
C
1/2
D
2/3
Analysis & Theory
Area = ∫₀¹ (x - x²) dx = [x²/2 - x³/3]₀¹ = 1/2 - 1/3 = 1/6.
The volume of solid obtained by rotating y = x (0 ≤ x ≤ 1) about x-axis is?
A
π/2
B
π/3
C
π/4
D
π
Analysis & Theory
Volume = π ∫₀¹ (x²) dx = π[x³/3]₀¹ = π/3.
The volume of solid obtained by rotating y = √x (0 ≤ x ≤ 1) about x-axis is?
A
π/2
B
π/3
C
π/4
D
2π/3
Analysis & Theory
Volume = π ∫₀¹ (√x)² dx = π∫₀¹ x dx = π/2.
The area bounded by y = sin(x) and x-axis from 0 to π is?
A
1
B
2
C
π
D
π/2
Analysis & Theory
Area = ∫₀^π sin(x) dx = [-cos(x)]₀^π = 2.
The volume of solid obtained by rotating y = sin(x) (0 ≤ x ≤ π) about x-axis is?
A
π²/2
B
π²
C
2π
D
π
Analysis & Theory
Volume = π ∫₀^π (sin(x))² dx = π[π/2] = π²/2.
The area under the curve y = e^x from x = 0 to 1 is?
A
e - 1
B
1
C
e
D
ln(e)
E
2
Analysis & Theory
Area = ∫₀¹ e^x dx = [e^x]₀¹ = e - 1.
The area bounded by parabola y² = 4x and x = 1 is?
A
4/3
B
2/3
C
1
D
2
Analysis & Theory
Area = ∫₀² (2√x) dx = [4/3 x^(3/2)]₀¹ = 4/3.
The volume of solid obtained by rotating y = x² (0 ≤ x ≤ 1) about x-axis is?
A
π/5
B
π/4
C
π/3
D
π/2
Analysis & Theory
Volume = π ∫₀¹ (x²)² dx = π∫₀¹ x⁴ dx = π/5.