Question

evaluate the series 72+12+2+....

Answer 1

hmmm, 6 might play a role here

Answer 2

\[A_n=76(\frac{1}{6})^{n-1}\]

Answer 3

And the formula for an infinite geometric series is...\[S = \dfrac{a}{1 -r}\]

Answer 4

Of course, this is only valid when \(|r|< 1 \), otherwise the series doesn't converge.

Answer 5

... 72, not 76 but other than that its perfect lol