Question

Find the indicated term.
a1 = 9, r = e^−x, n = 7

find a7

Answer 1

\[a_n=ar^{n-1}\]
\[a_7=ar^6\]

Answer 2

yeah I get that, but what do I do with the e^-x? am I supposed to figure out what e^-x is or? I tried solving and writing in the actual number but it was wrong.

Answer 3

\[a_7=9(e^{-x})^6\]
we can only write in terms of x

Answer 4

thank you!!!! I feel like an idiot! it was that simple!!! gah! thank you!

Answer 5

medal