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Mathematics
Mathematics
Problem
If
(
1.5
)
30
=
k
(1.5)^{30} = k
(
1.5
)
30
=
k
, then the value of
∑
n
=
2
29
(
1.5
)
n
\sum_{n=2}^{29} (1.5)^n
∑
n
=
2
29
(
1.5
)
n
, is : (a)
2
k
−
3
2k - 3
2
k
−
3
(b)
k
+
1
k + 1
k
+
1
(c)
2
k
+
7
2k + 7
2
k
+
7
(d)
2
k
−
9
2
2k - \frac{9}{2}
2
k
−
2
9
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