Waec Further Mathematics Past Questions For Year 2020
Question 6
Find the inverse of \(\begin{pmatrix} 3 & 5 \\ 1 & 2 \end{pmatrix}\)
- A. \(\begin{pmatrix} 5 & 1 \\ -3 & 2 \end{pmatrix}\)
- B. \(\begin{pmatrix} 2 & -5 \\ -1 & 3 \end{pmatrix}\)
- C. \(\begin{pmatrix} -5 & 2 \\ -1 & 3 \end{pmatrix}\)
- D. \(\begin{pmatrix} 5 & 1 \\ 2 & 3 \end{pmatrix}\)
Question 7
If V = plog\(_x\), (M + N), express N in terms of X, P, M and V
- A. N = X\(^{\frac{v}{p}}\) - M
- B. N = X\(^{\frac{p}{v}}\) - M
- C. N = X\(^{\frac{v}{p}}\) + M
- D. N = X\(^{\frac{p}{v}}\) + M
Question 8
Given that 2x + 3y - 10 and 3x = 2y - 11, calculate the value of (x - y).
- A. 5
- B. 3
- C. - 3
- D. - 5
Question 9
Differentiate \(\frac{x}{x + 1}\) with respect to x.
- A. \(\frac{x}{x + 1}\)
- B. \(\frac{-1}{x + 1}\)
- C. \(\frac{1 - x}{(x + 1)^2}\)
- D. \(\frac{1}{(x + 1)^2}\)
Question 10
If \(\frac{6x + k}{2x^2 + 7x - 15}\) = \(\frac{4}{x + 5} - \frac{2}{2x - 3}\). Find the value of k.
- A. - 21
- B. - 22
- C. - 24
- D. - 25
