Geometry Help for @danielamarques Please!

Question

anonymous · Answer

zarkon · Answer

$$\sum_{i=1}^{\infty}12\left(\frac{3}{5}\right)^{i-1}$$

zarkon · Answer

\sum_{i=1}^{\infty}12\left(\frac{3}{5}\right)^{i-1}

zarkon · Answer

this is a geometric sum

zarkon · Answer

$$\sum_{i=1}^{\infty}a\left(r\right)^{i-1}=\frac{a}{1-r}$$

for $|r|<1$

zarkon · Answer

compair your question to what I typed above

anonymous · Answer

I'm confused, which question is that one ^

zarkon · Answer

that is the sum in question #3 of the file you posted

anonymous · Answer

I don't get this at all >.<

zarkon · Answer

have you had a lecture on how to computer geometric series?

zarkon · Answer

*compute

zarkon · Answer