If \[A=1+{{r}^{z}}+{{r}^{2z}}+{{r}^{3z}}+.......\infty \], then the value of r will be

\[{{\left( \frac{1}{A}-1 \right)}^{1/z}}\]

\[{{\left( \frac{A-1}{A} \right)}^{1/z}}\]

If \[A=1+{{r}^{z}}+{{r}^{2z}}+{{r}^{3z}}+.......\infty \], then the va

1.	If \[A=1+{{r}^{z}}+{{r}^{2z}}+{{r}^{3z}}+.......\infty \], then the value of r will be
A.	\[A{{(1-A)}^{z}}\]
B.	\[{{\left( \frac{A-1}{A} \right)}^{1/z}}\]
C.	\[{{\left( \frac{1}{A}-1 \right)}^{1/z}}\]
D.	\[A{{(1-A)}^{1/z}}\]
Answer» C. \[{{\left( \frac{1}{A}-1 \right)}^{1/z}}\]

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If \[A=1+{{r}^{z}}+{{r}^{2z}}+{{r}^{3z}}+.......\infty \], then the value of r will be

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