Q. The slope of the tangent to the curve y = x^3 - 3x at x = 1 is:
Solution
The derivative f'(x) = 3x^2 - 3. At x = 1, f'(1) = 3(1)^2 - 3 = 0, so the slope is 0.
Correct Answer: B — 1
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Q. What is the area between the curves y = x^2 and y = 4 from x = -2 to x = 2?
Solution
The area between the curves is given by ∫(from -2 to 2) (4 - x^2) dx = [4x - x^3/3] from -2 to 2 = (8 - (8/3)) - (-8 + (8/3)) = 16 - (16/3) = 32/3.
Correct Answer: A — 8
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Q. What is the area under the curve y = 1/x from x = 1 to x = 2?
-
A.
ln(2)
-
B.
1
-
C.
ln(2) - 1
-
D.
0
Solution
The area is given by the integral from 1 to 2 of 1/x dx. This evaluates to [ln(x)] from 1 to 2 = ln(2) - ln(1) = ln(2).
Correct Answer: A — ln(2)
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Q. What is the area under the curve y = cos(x) from x = 0 to x = π/2?
Solution
The area is given by the integral from 0 to π/2 of cos(x) dx. This evaluates to [sin(x)] from 0 to π/2 = 1 - 0 = 1.
Correct Answer: A — 1
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Q. What is the area under the curve y = sin(x) from x = 0 to x = π?
Solution
The area is given by the integral from 0 to π of sin(x) dx. This evaluates to [-cos(x)] from 0 to π = [1 - (-1)] = 2.
Correct Answer: C — π
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Q. What is the area under the curve y = x^2 from x = 0 to x = 3?
Solution
The area is given by the integral ∫_0^3 x^2 dx = [x^3/3]_0^3 = 27/3 = 9.
Correct Answer: A — 9
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Q. What is the area under the curve y = x^2 from x = 1 to x = 3?
-
A.
8/3
-
B.
10/3
-
C.
9/3
-
D.
7/3
Solution
The area is ∫(1 to 3) x^2 dx = [1/3 * x^3] from 1 to 3 = (27/3 - 1/3) = 26/3.
Correct Answer: B — 10/3
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Q. What is the area under the curve y = x^3 from x = 1 to x = 2?
Solution
The area under the curve y = x^3 from x = 1 to x = 2 is given by ∫(from 1 to 2) x^3 dx = [x^4/4] from 1 to 2 = (16/4) - (1/4) = 4 - 0.25 = 3.75.
Correct Answer: B — 4
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Q. What is the area under the curve y = x^4 from x = 0 to x = 1?
-
A.
1/5
-
B.
1/4
-
C.
1/3
-
D.
1/2
Solution
The area under the curve y = x^4 from x = 0 to x = 1 is given by ∫(from 0 to 1) x^4 dx = [x^5/5] from 0 to 1 = 1/5.
Correct Answer: A — 1/5
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Q. What is the critical point of f(x) = x^3 - 3x^2 + 4?
Solution
Setting f'(x) = 3x^2 - 6x = 0 gives x(x - 2) = 0, so critical points are x = 0 and x = 2.
Correct Answer: B — 2
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Q. What is the critical point of f(x) = x^3 - 6x^2 + 9x?
Solution
Setting f'(x) = 0 gives critical points at x = 1, 2, and 3.
Correct Answer: C — 2
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Q. What is the derivative of f(x) = 3x^3 - 5x + 2?
-
A.
9x^2 - 5
-
B.
3x^2 - 5
-
C.
9x^2 + 5
-
D.
3x^2 + 5
Solution
f'(x) = 9x^2 - 5.
Correct Answer: A — 9x^2 - 5
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Q. What is the derivative of f(x) = 5x^4 - 3x + 2?
-
A.
20x^3 - 3
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B.
20x^3 + 3
-
C.
15x^3 - 3
-
D.
5x^3 - 3
Solution
The derivative f'(x) = d/dx(5x^4 - 3x + 2) = 20x^3 - 3.
Correct Answer: A — 20x^3 - 3
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Q. What is the derivative of f(x) = e^x?
-
A.
e^x
-
B.
x*e^x
-
C.
1
-
D.
0
Solution
The derivative of e^x is e^x.
Correct Answer: A — e^x
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Q. What is the derivative of f(x) = ln(x^2 + 1) at x = 0?
-
A.
0
-
B.
1
-
C.
2
-
D.
undefined
Solution
f'(x) = (2x)/(x^2 + 1), thus f'(0) = 0.
Correct Answer: A — 0
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Q. What is the derivative of f(x) = ln(x^2 + 1) at x = 1?
Solution
f'(x) = (2x)/(x^2 + 1). At x = 1, f'(1) = (2*1)/(1^2 + 1) = 1.
Correct Answer: B — 1
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Q. What is the derivative of f(x) = ln(x^2 + 1)?
-
A.
2x/(x^2 + 1)
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B.
1/(x^2 + 1)
-
C.
2/(x^2 + 1)
-
D.
x/(x^2 + 1)
Solution
Using the chain rule, f'(x) = (1/(x^2 + 1)) * (2x) = 2x/(x^2 + 1).
Correct Answer: A — 2x/(x^2 + 1)
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Q. What is the derivative of f(x) = sin(x) + cos(x)?
-
A.
cos(x) - sin(x)
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B.
-sin(x) - cos(x)
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C.
sin(x) + cos(x)
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D.
-sin(x) + cos(x)
Solution
Using the derivatives of sine and cosine, f'(x) = cos(x) - sin(x).
Correct Answer: A — cos(x) - sin(x)
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Q. What is the derivative of f(x) = sin(x^2)?
-
A.
2x cos(x^2)
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B.
cos(x^2)
-
C.
2x sin(x^2)
-
D.
sin(x^2)
Solution
Using the chain rule, f'(x) = cos(x^2) * 2x = 2x cos(x^2).
Correct Answer: A — 2x cos(x^2)
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Q. What is the derivative of f(x) = tan(x)?
-
A.
sec^2(x)
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B.
csc^2(x)
-
C.
sec(x)
-
D.
tan^2(x)
Solution
The derivative of tan(x) is sec^2(x).
Correct Answer: A — sec^2(x)
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Q. What is the derivative of f(x) = x^2 * e^x?
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A.
e^x(2x + x^2)
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B.
e^x(2x)
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C.
e^x(x^2 + 2)
-
D.
e^x(x^2 + 1)
Solution
Using the product rule, f'(x) = e^x * (x^2 + 2x).
Correct Answer: A — e^x(2x + x^2)
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Q. What is the derivative of f(x) = x^2 + 2x + 1?
-
A.
2x + 2
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B.
2x + 1
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C.
x + 2
-
D.
2x
Solution
f'(x) = 2x + 2.
Correct Answer: A — 2x + 2
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Q. What is the derivative of f(x) = x^2 at x = 3?
Solution
f'(x) = 2x; f'(3) = 2*3 = 6.
Correct Answer: B — 6
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Q. What is the derivative of f(x) = x^3 - 4x^2 + 6x?
-
A.
3x^2 - 8x + 6
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B.
3x^2 + 8x + 6
-
C.
2x^2 - 4x + 6
-
D.
3x^2 - 4x + 6
Solution
The derivative f'(x) = d/dx(x^3 - 4x^2 + 6x) = 3x^2 - 8x + 6.
Correct Answer: A — 3x^2 - 8x + 6
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Q. What is the derivative of f(x) = x^4?
-
A.
4x^3
-
B.
3x^4
-
C.
2x^4
-
D.
x^3
Solution
f'(x) = 4x^3.
Correct Answer: A — 4x^3
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Q. What is the derivative of f(x) = x^5 + 2x^3 - x?
-
A.
5x^4 + 6x^2 - 1
-
B.
5x^4 + 6x^3 - 1
-
C.
5x^4 + 2x^2 - 1
-
D.
5x^4 + 2x^3
Solution
The derivative f'(x) = d/dx(x^5 + 2x^3 - x) = 5x^4 + 6x^2 - 1.
Correct Answer: A — 5x^4 + 6x^2 - 1
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Q. What is the derivative of f(x) = x^5?
-
A.
5x^4
-
B.
4x^5
-
C.
x^4
-
D.
5x^3
Solution
The derivative f'(x) = d/dx(x^5) = 5x^4.
Correct Answer: A — 5x^4
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Q. What is the derivative of f(x) = |x| at x = 0?
-
A.
0
-
B.
1
-
C.
-1
-
D.
Undefined
Solution
The left-hand derivative is -1 and the right-hand derivative is 1, hence the derivative at x = 0 is undefined.
Correct Answer: D — Undefined
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Q. What is the derivative of f(x) = √x?
-
A.
1/(2√x)
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B.
2√x
-
C.
1/x
-
D.
√x/2
Solution
f'(x) = 1/(2√x).
Correct Answer: A — 1/(2√x)
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Q. What is the equation of the tangent line to the curve y = x^2 + 2x at the point (1, 3)?
-
A.
y = 2x + 1
-
B.
y = 2x + 2
-
C.
y = 3x
-
D.
y = x + 2
Solution
f'(x) = 2x + 2. At x = 1, f'(1) = 4. The tangent line is y - 3 = 4(x - 1) => y = 4x - 1.
Correct Answer: A — y = 2x + 1
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