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2008 - JAMB Mathematics Past Questions and Answers - page 4

31

Find the derivative of (y=\frac{x^7 - x^5}{x^4})

A
x(x2-1)
B
3x(x2-1)
C
3x2-1
D
7x6-5x4
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32

Differentiate sin x - x cos x

A
x cos x
B
x sin x
C
-x cos x
D
-x sin x
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33

Find the minimum value of the function y = x(1+x)

A
-1/4
B
-1/2
C
1/4
D
1/2
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34

Evaluate (\int_1 ^2(6x^2-2x)dx)

A
16
B
13
C
12
D
11
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35

Evaluate (\int^{\frac{\pi}{2}} _{\frac{-\pi}{2}} cos x dx)

A
zero
B
1
C
2
D
3
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36

On a pie chart there s=are six sectors of which four angles are 30o, 45o, 60o, 90o and the remaining two angles are in the ratio 2:1. Find the smallest angles of the remaining two angles

A
15o
B
30o
C
45o
D
60o
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37
He bar chart above shows the number of times the word a, and , in, it, the , to appear in a paragraph in a book. What is the ratio of the least frequent word?
A
1/4
B
1/3
C
2/3
D
3/4
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38

What is the mean of the data t, 2t-1, t-2, 2t-1, 4t and 2t+2?

A
2t
B
2t-1
C
2/3t+1
D
2t-1/3
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39

Find the median of 4, 1, 4, 1, 0, 4, 4, 2 and 0

A
zero
B
1
C
2
D
4
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40

If x > 0, find the range of number x-3, 3x+2,x-1, 4x, 2x-1, x-2, 2x-2, 3x and 3x+1

A
3x+3
B
3x+1
C
2x+5
D
2x+1
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