Differentiating term by term: d/dx(x^3) = 3x^2, d/dx(2x) = 2.
Mathematics Past Questions
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147 questions
JAMB 2359
WAEC 1853
NECO 179
POST_UTME 6
CUSTOM 10
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Past Questions
147 questions
Question 71
post_utme
2023
Find the derivative of y = x^3 + 2x
Explanation Answer: A
Question 72
jamb
2023
If log(base2) 8 = x, find x
Explanation Answer: B
2^3 = 8, therefore log(base2) 8 = 3.
Question 73
jamb
2023
A bag contains 3 red and 5 blue balls. What is the probability of picking a red ball?
Explanation Answer: B
Probability = favourable outcomes / total = 3/(3+5) = 3/8.
Question 74
jamb
2023
Find the value of x when x = 2y - 3 and y = 4
Explanation Answer: A
Substitute y = 4: x = 2(4) - 3 = 8 - 3 = 5.
Question 75
jamb
2023
If a train travels 120km in 2 hours, what is its speed in km/h?
Explanation Answer: A
Speed = Distance/Time = 120/2 = 60 km/h.
Question 76
jamb
2023
What is the value of 2^5 ¸ 2^2?
Explanation Answer: B
When dividing powers with the same base, subtract the exponents: 2^(5-2) = 2^3 = 8.
Question 77
jamb
2023
Find the value of x in the equation 2(x - 3) = x + 5
Explanation Answer: C
Expand: 2x - 6 = x + 5, so x = 11.