Jamb Mathematics 2019 Past Questions and Answers

Question 26:

• JAMB 2019

\(\frac{d}{dx} [\log (4x^3 - 2x)]\) is equal to

A. \(\frac{12x - 2}{4x^2}\)
B. \(\frac{43x^2 - 2x}{7x}\)
C. \(\frac{4x^2 - 2}{7x + 6}\)
D. \(\frac{12x^2 - 2}{4x^3 - 2x}\)

Question 27:

• JAMB 2019

If \(f(x) = 3x^3 + 4x^2 + x - 8\), what is the value of f(-2)?

A. -24
B. 30
C. -18
D. -50

Question 28:

• JAMB 2019

Solve for x in \(\frac{4x - 6}{3} \leq \frac{3 + 2x}{2}\)

A. \(x \leq 1\frac{1}{2}\)
B. \(x \leq \frac{21}{2}\)
C. \(x \geq \frac{21}{2}\)
D. \(x \geq 1\frac{1}{2}\)

Question 29:

• JAMB 2019

Solve the inequality: -7 \(\leq\) 9 - 8x < 16 - x

A. -1 \(\leq\) x \(\leq\) 2
B. -1 \(\leq\) x < 2
C. -1 < x < 2
D. -1 < x \(\leq\) 2

Question 30:

• JAMB 2019

The nth term of a sequence is given by 2\(^{2n - 1}\). Find the sum of the first four terms.

A. 74
B. 32
C. 42
D. 170