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Find the value of b given that:

\[ \dfrac b 7 + \dfrac {b^2}{7^2} + \dfrac {b^3}{7^3} + \cdots = 7.\]

 May 21, 2022
 #1
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Using geometric series, b = 32/7.

 May 21, 2022
 #2
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How did you get this. Show you work

 May 21, 2022

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