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Mathematics
Mathematics
Problem
- Find
x
x
x
if
∑
k
=
1
∞
(
3
x
2
)
k
−
1
=
4
\sum_{k=1}^{\infty} \left(\frac{3x}{2}\right)^{k-1} = 4
∑
k
=
1
∞
(
2
3
x
)
k
−
1
=
4
.
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