2002 - JAMB Mathematics Past Questions and Answers - page 2
11
A circle with radius 5cm has its radius increasing at the rate of 0.2m/s. What will be the corresponding increase in the area?
A
2π
B
5π
C
π
D
4π
correct option: a
Users' Answers & Comments12
If y = x2 - (1/x). find dy/dx
A
2x - (1/x2)
B
2x + x2
C
2x - x2
D
2x + (1/x2)
correct option: d
Users' Answers & Comments13
Solve for x in the equation x3 - 5x2 - x + 5 = 0
A
1, - 1, or 5
B
1, 1, or -5
C
-1, 1, or -5
D
1, 1, or 5
correct option: a
Users' Answers & Comments14
The time taken to do a piece of work is inversely proportional to the number of
men employed. if it takes 45 men to do a piece of work in 5 days, how long will
it take 25 men?
men employed. if it takes 45 men to do a piece of work in 5 days, how long will
it take 25 men?
A
15 days
B
12 days
C
5 days
D
9 days
correct option: d
Users' Answers & Comments15
Find the range of values of x for which \(\frac{(x+2)}{4}-\frac{2x-3}{3}<4\)
A
x > -6
B
x > -3
C
x < 8
D
x < 4
correct option: a
Users' Answers & Comments16
Find the maximum value of y in the equation y = 1 - 2x - 3x2
A
5/4
B
5/3
C
3/4
D
4/3
correct option: d
Users' Answers & Comments17
If the 9th term of an A.P is five times the 5th term, find the relationship between a and d.
A
2a + 2 = 0
B
3a + 5d = 0
C
a + 3d = 0
D
a + 2d = 0
correct option: c
Users' Answers & Comments18
Make r subject of the formula given that \(\frac{x}{r+a}=\frac{a}{r}\)
A
\(\frac{a^{2}}{(x-a)}\)
B
\(\frac{a^{2}}{(x+a)}\)
C
\(\frac{a}{x-a}\)
D
\(\frac{a}{x+a}\)
correct option: a
Users' Answers & Comments19
The inverse function f(x) = 3x + 4 is
A
(x-4)/3
B
(x-5)/5
C
(x+3)/4
D
(x+4)/3
correct option: a
Users' Answers & Comments20
If -2 is the solution of the equation 2x + 1 - 3c = 2c + 3x - 7, find the value of c.
A
4
B
3
C
2
D
1
correct option: c
Users' Answers & Comments