Mathematics 2016 Jamb Past Questions and Answers

Question 26 :

• JAMB 2016

Find \(\frac{dy}{dx}\), if y = \(\frac{2}{3}\) x\(^3\) - \(\frac{4}{x}\)

A. 3x² - \(\frac{4}{x}\)
B. 2x² +\(\frac{4}{x^2}\)
C. 3x² + \(\frac{4}{x^2}\)
D. 2x² - \(\frac{4}{x}\)

Question 27 :

• JAMB 2016

Evaluate \(\frac{0.8 \times 0.43 \times 0.031}{0.05 \times 0.72 \times 0.021}\). Correct to four significant figures.

A. 14.09
B. 14.1
C. 14.12
D. 14.11

Question 28 :

• JAMB 2016

An arc subtends an angle of 30^o at the centre of a circle radius 12cm. Calculate the length of the arc.

A. 6\(\pi\)cm
B. 2\(\pi\)cm
C. 3\(\pi\)cm
D. 9\(\pi\)cm

Question 29 :

• JAMB 2016

Evaluate \(\int\limits_0^\frac{\pi}{2}\) sin xdx

A. 2
B. -1
C. 1
D. -2

Question 30 :

• JAMB 2016

An arc of the length 16\(\pi\)cm subtends an angle of 80^o at the centre of the circle. Find the radius of the circle.

A. 24cm
B. 28cm
C. 36cm
D. 32cm