Jamb Mathematics Questions
Question 66:
The nth term of the progression \(\frac{4}{2}\), \(\frac{7}{3}\), \(\frac{10}{4}\), \(\frac{13}{5}\) is ...
- A \(\frac{1 - 3n}{n + 1}\)
- B \(\frac{3n + 1}{n + 1}\)
- C \(\frac{3n + 1}{n - 1}\)
- D \(\frac{3n - 1}{n + 1}\)
Question 68:
If P = \(\begin{pmatrix} 5 & 3 \\ 2 & 1 \end{pmatrix}\) and Q = \(\begin{pmatrix} 4 & 2 \\ 3 & 5 \end{pmatrix}\), find 2P + Q
- A \(\begin{vmatrix} 7 & 7 \\ 14 & 8 \end{vmatrix}\)
- B \(\begin{vmatrix} 14 & 8 \\ 7 & 7 \end{vmatrix}\)
- C \(\begin{vmatrix} 7 & 7 \\ 8 & 14 \end{vmatrix}\)
- D \(\begin{vmatrix} 8 & 14 \\ 7 & 7 \end{vmatrix}\)
Question 69:
Find the inverse \(\begin{pmatrix} 5 & 3 \\ 6 & 4 \end{pmatrix}\)
- A \(\begin{vmatrix} 2 & -\frac{3}{2} \\ -3 & -\frac{5}{2} \end{vmatrix}\)
- B \(\begin{vmatrix} 2 & -\frac{3}{2} \\ -3 & \frac{5}{2} \end{vmatrix}\)
- C \(\begin{vmatrix} 2 & \frac{3}{2} \\ -3 & \frac{5}{2} \end{vmatrix}\)
- D \(\begin{vmatrix} 2 & \frac{3}{2} \\ -3 & \frac{5}{2} \end{vmatrix}\)
Question 70:
If y = x sin x, find \(\frac{\delta y}{\delta x}\)
- A Sin x - cos x
- B Cos x - x sin x
- C Cos x + x sin x
- D Sin x + x cos x