Q. What is the first derivative of f(x) = ln(x)? (2019)
A.
1/x
B.
x
C.
ln(x)
D.
e^x
Show solution
Solution
The derivative f'(x) = 1/x.
Correct Answer: A — 1/x
Learn More →
Q. What is the first derivative of f(x) = tan(x)? (2021)
A.
sec^2(x)
B.
cos^2(x)
C.
sin^2(x)
D.
csc^2(x)
Show solution
Solution
The derivative of f(x) = tan(x) is f'(x) = sec^2(x).
Correct Answer: A — sec^2(x)
Learn More →
Q. What is the focus of the parabola defined by the equation y^2 = 20x?
A.
(5, 0)
B.
(0, 5)
C.
(0, 10)
D.
(10, 0)
Show solution
Solution
In the equation y^2 = 4px, we have 4p = 20, thus p = 5. The focus is at (5, 0).
Correct Answer: A — (5, 0)
Learn More →
Q. What is the focus of the parabola given by the equation y^2 = 20x?
A.
(5, 0)
B.
(0, 5)
C.
(0, -5)
D.
(10, 0)
Show solution
Solution
For the parabola y^2 = 4px, here 4p = 20, so p = 5. The focus is at (5, 0).
Correct Answer: A — (5, 0)
Learn More →
Q. What is the general solution of the differential equation dy/dx = 3x^2?
A.
y = x^3 + C
B.
y = 3x^3 + C
C.
y = x^2 + C
D.
y = 3x^2 + C
Show solution
Solution
Integrating both sides gives y = ∫3x^2 dx = x^3 + C.
Correct Answer: A — y = x^3 + C
Learn More →
Q. What is the indefinite integral of e^x? (2020)
A.
e^x + C
B.
e^x
C.
x e^x + C
D.
x^2 e^x + C
Show solution
Solution
The indefinite integral of e^x is e^x + C.
Correct Answer: A — e^x + C
Learn More →
Q. What is the integral of cos(3x) dx?
A.
(1/3)sin(3x) + C
B.
3sin(3x) + C
C.
(1/3)cos(3x) + C
D.
sin(3x) + C
Show solution
Solution
The integral of cos(3x) is (1/3)sin(3x) + C, where C is the constant of integration.
Correct Answer: A — (1/3)sin(3x) + C
Learn More →
Q. What is the integral of e^(2x) dx?
A.
(1/2)e^(2x) + C
B.
2e^(2x) + C
C.
e^(2x) + C
D.
(1/2)e^(x) + C
Show solution
Solution
The integral of e^(2x) is (1/2)e^(2x) + C, where C is the constant of integration.
Correct Answer: A — (1/2)e^(2x) + C
Learn More →
Q. What is the integrating factor for the equation dy/dx + 3y = 6?
A.
e^(3x)
B.
e^(-3x)
C.
3e^(3x)
D.
3e^(-3x)
Show solution
Solution
The integrating factor is e^(∫3dx) = e^(3x).
Correct Answer: A — e^(3x)
Learn More →
Q. What is the latus rectum of the parabola given by the equation y^2 = 12x?
Show solution
Solution
The latus rectum of a parabola y^2 = 4px is given by 4p. Here, 4p = 12, so p = 3, and the latus rectum is 4p = 12.
Correct Answer: C — 6
Learn More →
Q. What is the length of an arc of a circle with radius 5 cm and central angle 60 degrees? (2023)
A.
5π/3 cm
B.
5π/6 cm
C.
5π/12 cm
D.
5π/4 cm
Show solution
Solution
Arc length = (θ/360) × 2πr = (60/360) × 2π(5) = (1/6) × 10π = 5π/6 cm.
Correct Answer: B — 5π/6 cm
Learn More →
Q. What is the length of the altitude from vertex A to side BC in triangle ABC, where AB = 10 cm, AC = 6 cm, and angle A = 90 degrees? (2023)
A.
6 cm
B.
8 cm
C.
10 cm
D.
12 cm
Show solution
Solution
In a right triangle, the altitude from the right angle to the hypotenuse is equal to the length of the other side. Thus, the altitude is 6 cm.
Correct Answer: A — 6 cm
Learn More →
Q. What is the length of the diagonal of a rectangle with length 6 cm and width 8 cm? (2022)
A.
10 cm
B.
12 cm
C.
14 cm
D.
16 cm
Show solution
Solution
The length of the diagonal d of a rectangle can be found using the Pythagorean theorem: d = √(length² + width²) = √(6² + 8²) = √(36 + 64) = √100 = 10 cm.
Correct Answer: A — 10 cm
Learn More →
Q. What is the length of the diagonal of a rectangle with sides 3 cm and 4 cm? (2020)
A.
5 cm
B.
7 cm
C.
6 cm
D.
8 cm
Show solution
Solution
Diagonal = √(length² + width²) = √(3² + 4²) = √(9 + 16) = √25 = 5 cm
Correct Answer: A — 5 cm
Learn More →
Q. What is the length of the diagonal of a rectangle with sides 6 cm and 8 cm? (2020)
A.
10 cm
B.
12 cm
C.
14 cm
D.
16 cm
Show solution
Solution
Diagonal = √(length² + width²) = √(6² + 8²) = √(36 + 64) = √100 = 10 cm
Correct Answer: A — 10 cm
Learn More →
Q. What is the length of the diameter of a circle with an area of 50π square units? (2023)
A.
10 units
B.
5 units
C.
20 units
D.
15 units
Show solution
Solution
Area = πr². Given area = 50π, r² = 50, r = √50 = 5√2. Diameter = 2r = 10√2 units.
Correct Answer: A — 10 units
Learn More →
Q. What is the length of the median from vertex A to side BC in triangle ABC, where AB = 10 cm, AC = 6 cm, and BC = 8 cm? (2023)
A.
5 cm
B.
6 cm
C.
7 cm
D.
8 cm
Show solution
Solution
Using the median formula: m_a = 1/2 * sqrt(2b^2 + 2c^2 - a^2), where a = BC, b = AC, c = AB. m_a = 1/2 * sqrt(2*6^2 + 2*10^2 - 8^2) = 7 cm.
Correct Answer: C — 7 cm
Learn More →
Q. What is the limit: lim (x -> 0) (1 - cos(x))/(x^2)? (2022)
A.
0
B.
1/2
C.
1
D.
Undefined
Show solution
Solution
Using the identity 1 - cos(x) = 2sin^2(x/2), we have lim (x -> 0) (1 - cos(x))/(x^2) = lim (x -> 0) (2sin^2(x/2))/(x^2) = 1/2.
Correct Answer: B — 1/2
Learn More →
Q. What is the limit: lim (x -> 0) (cos(x) - 1)/x^2? (2019)
A.
0
B.
-1/2
C.
1
D.
Undefined
Show solution
Solution
Using the Taylor series expansion for cos(x), we find that lim (x -> 0) (cos(x) - 1)/x^2 = -1/2.
Correct Answer: B — -1/2
Learn More →
Q. What is the limit: lim (x -> 0) (e^x - 1)/x? (2022)
A.
1
B.
0
C.
e
D.
Undefined
Show solution
Solution
Using the derivative of e^x at x = 0, we find that lim (x -> 0) (e^x - 1)/x = 1.
Correct Answer: A — 1
Learn More →
Q. What is the limit: lim (x -> 0) (ln(1 + x)/x)?
A.
1
B.
0
C.
∞
D.
Undefined
Show solution
Solution
Using L'Hôpital's Rule, we differentiate the numerator and denominator to find lim (x -> 0) (1/(1 + x)) = 1.
Correct Answer: A — 1
Learn More →
Q. What is the limit: lim (x -> 1) (x^2 - 1)/(x - 1)? (2019)
A.
0
B.
1
C.
2
D.
Undefined
Show solution
Solution
Factoring gives (x - 1)(x + 1)/(x - 1), which simplifies to x + 1. Thus, lim (x -> 1) (x + 1) = 2.
Correct Answer: C — 2
Learn More →
Q. What is the magnitude of the vector C = 5i - 12j?
Show solution
Solution
Magnitude |C| = √(5^2 + (-12)^2) = √(25 + 144) = √169 = 13.
Correct Answer: A — 13
Learn More →
Q. What is the maximum value of f(x) = -2x^2 + 10x - 12? (2022)
Show solution
Solution
The maximum occurs at x = -b/(2a) = -10/(-4) = 2. f(2) = -2(2^2) + 10(2) - 12 = 6.
Correct Answer: C — 6
Learn More →
Q. What is the maximum value of f(x) = -3x^2 + 12x - 5? (2019)
Show solution
Solution
The vertex is at x = -12/(2*(-3)) = 2. The maximum value is f(2) = -3(2^2) + 12(2) - 5 = 7.
Correct Answer: C — 7
Learn More →
Q. What is the maximum value of the function f(x) = -2x^2 + 8x - 5? (2019)
Show solution
Solution
The vertex occurs at x = -b/(2a) = 2. f(2) = -2(2^2) + 8(2) - 5 = 9.
Correct Answer: B — 9
Learn More →
Q. What is the mean of the following data set: 4, 8, 6, 5, 3? (2021)
Show solution
Solution
Mean = (4 + 8 + 6 + 5 + 3) / 5 = 26 / 5 = 5.2, rounded down to 5.
Correct Answer: C — 6
Learn More →
Q. What is the measure of an angle that is supplementary to an angle measuring 110 degrees?
A.
70 degrees
B.
80 degrees
C.
90 degrees
D.
100 degrees
Show solution
Solution
Supplementary angles sum up to 180 degrees. Therefore, the angle measures 180 - 110 = 70 degrees.
Correct Answer: A — 70 degrees
Learn More →
Q. What is the measure of an exterior angle of a triangle if the two opposite interior angles are 50 degrees and 60 degrees?
A.
70 degrees
B.
80 degrees
C.
90 degrees
D.
100 degrees
Show solution
Solution
The exterior angle of a triangle is equal to the sum of the two opposite interior angles. Therefore, the exterior angle = 50 + 60 = 110 degrees.
Correct Answer: B — 80 degrees
Learn More →
Q. What is the measure of each angle in a pair of complementary angles if one angle is 30 degrees?
A.
60 degrees
B.
90 degrees
C.
30 degrees
D.
150 degrees
Show solution
Solution
Complementary angles sum up to 90 degrees. If one angle is 30 degrees, the other angle is 90 - 30 = 60 degrees.
Correct Answer: A — 60 degrees
Learn More →
Showing 901 to 930 of 1137 (38 Pages)