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Thursday, 05 March 2026
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Mathematics Past Questions and Answers

Jamb Mathematics Questions

Question 31:
Given that \(\theta\) is an acute angle and sin \(\theta\) = \(\frac{m}{n}\), find cos \(\theta\)
  • A \(\frac{\sqrt{n^2 - m^2}}{m}\)
  • B \(\frac{\sqrt{(n + m)(n - m)}}{n}\)
  • C \(\frac{m}{\sqrt{n^2 - m^2}}\)
  • D \(\sqrt{\frac{n}{n^2 - m^2}}\)
View Answer & Explanation
Question 32:
Evaluate \(\lim \limits_{x \to 2} \frac{(x - 2)(x^2 + 3x - 2)}{x^2 - 4}\)
  • A 7
  • B 2
  • C 3
  • D 4
View Answer & Explanation
Question 33:
If y = x sin x, Find \(\frac{d^2 y}{d^2 x}\)
  • A 2 cosx - x sinx
  • B Sinx + x cosx
  • C Sinx - x cosx
  • D X sinx - 2 cosx
View Answer & Explanation
Question 34:
Ice forms on a refrigerator ice-box at the rate of (4 - 06t)g per minute after t minutes. If initially there are 2g of ice in the box, find the mass of ice formed in 5 minutes
  • A 19.5
  • B 17.0
  • C 14.5
  • D 12.5
View Answer & Explanation
Question 35:
Obtain a maximum value of the function f(x) x3 - 12x + 11
  • A -5
  • B -2
  • C 2
  • D 27
View Answer & Explanation