Application of differentiation - Jamb Mathematics Past Questions and Answers

Question 21:

• JAMB 2002

Find the maximum value of y in the equation y = 1 - 2x - 3x\(^2\)

A. 5/4
B. 5/3
C. 3/4
D. 4/3

Question 22:

• JAMB 2003

Determine the maximum value of y = 3x² - x³

A. Zero
B. 2
C. 4
D. 6

Question 23:

• JAMB 2005

The radius r of a circular disc is increasing at the rate of 0.5cm/sec. At what rate is the area of the disc increasing when its radius is 6cm?

A. 36 π cm²/sec
B. 18 π cm²/sec
C. 6 π cm²/sec
D. 3 π cm²/sec

Question 24:

• JAMB 2005

The maximum value of the function
f(x) = 2 + x - x² is

A. 9/4
B. 7/4
C. 3/2
D. 1/2

Question 25:

• JAMB 2006

Find the value of x for which the function 3x³ - 9x is minimum

A. Zero
B. 2
C. 3
D. 5