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16
Express \(\frac{1}{X^{3}-1}\) in partial fractions
A.
1/3{(1/x-1)-(x-2/x
^{2}
-x+1)}
B.
1/3{(1/x-1)-(x+2/x
^{2}
+x+1)}
C.
1/3{(1/x-1)-(x-2/x
^{2}
+x+1)}
D.
1/3{(1/x-1)-(x-2/x
^{2}
-x-1)}
View Answer & Discuss (10)
17
The first term of a geometric progression is twice its common ratio. Find the sum of the first two terms of the G.P if its sum to infinity is 8.
A.
8/5
B.
8/3
C.
72/25
D.
56/9
View Answer & Discuss (10)
18
Divide 4x3-3x+1 by 2x-1
A.
2x
^{2}
-x+1
B.
2x
^{2}
-x-1
C.
2x
^{2}
+x+1
D.
2x
^{2}
+x-1
View Answer & Discuss (28)
19
Find a positive value of ã if the coordinate of the centre of a circle X
^{2}
+y
^{2}
-2ãx+4y-ã = 0 is (ã,-2) and the radius is 4 units.
A.
1
B.
2
C.
3
D.
4
View Answer & Discuss (11)
20
A man 1.7m tall observes a bird on top of a tree at an angle of 30
^{0}
. if the distance between the man's head and the bird is 25m, what is the height of the tree?
A.
26.7m
B.
14.2m
C.
\(1.7+(25\frac{\sqrt{3}}{3}m\)
D.
\(1.7+(25\frac{\sqrt{2}}{2}m\)
View Answer & Discuss (16)
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