Question

Evaluate: Sigma(Infinite) i = 1 Formula: 3(-1/4)^i (sum)

Answer 1

Okay maybe this

\[\sum_{i=1}^{\infty} 3 \times \frac{-1}{4}^i \]

Answer 2

precisely

Answer 3

it just says: Evaluate next to it

Answer 4

okay do you know sum of gp (geometric progression )

Answer 5

yes. s = 1/(1-r)

Answer 6

right?

Answer 7

thats correct :)

Answer 8

\[Sum_{G.P} = \frac{a}{1-r}\]
\[r = \frac{-1}{4}\]
\[a = \frac{-1}{4}\]

\[Sum = 3 ( \frac{ \frac{-1}{4}}{1 + \frac{1}{4} })\]

Answer 9

thank u. i suppose i was right and entered things wrong.

Answer 10

\[Sum = -\frac{3}{5}\]

Answer 11

: )