Application of differentiation - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 2014

Find the minimum value of y = x² - 2x - 3

A. 4
B. 1
C. -1
D. -4

Question 7:

• JAMB 1990

At what value of x is the function x\(^2\) + x + 1 minimum?

A. -1
B. \(-\frac{1}{2}\)
C. \(\frac{1}{2}\)
D. 1

Question 8:

• JAMB 1991

At what value of x is the function y = x² - 2x - 3 minimum?

A. 1
B. -1
C. -4
D. 4

Question 9:

• JAMB 1992

Ice forms on a refrigerator ice-box at the rate of (4 - 06t)g per minute after t minutes. If initially there are 2g of ice in the box, find the mass of ice formed in 5 minutes

A. 19.5
B. 17.0
C. 14.5
D. 12.5

Question 10:

• JAMB 1992

Obtain a maximum value of the function f(x) x³ - 12x + 11

A. -5
B. -2
C. 2
D. 27