Question

help

Answer 1

\[\frac{ -2 }{ 1-\frac{ x }{ 2 } }\]

Answer 2

write geometric series atleast 4 and general term

Answer 3

i mean power series

Answer 4

@zepdrix

Answer 5

Hmm I don't remember how to do these :c do you have a formula or something maybe?

Answer 6

no but what i have done is took common denominator and simplified it to \[\frac{ -4 }{ 2-x }\]

Answer 7

factored -2 \[-2(\frac{ 1 }{ 1-\frac{ x }{ 2 } })\]

Answer 8

\[-2\sum_{n=0}^{\infty}{(\frac{ -x }{ 2})^n}\]

Answer 9

I don't think there should be a negative on your x. Looks good besides that though.
\[\large -2\sum_{n=0}^{\infty}{\left(\frac{ x }{ 2}\right)^n}\]

Answer 10

i got this and so series is \[-2+X-\frac{ X^2 }{ 2 }+\frac{ X^3 }{4 }\]

Answer 11

Ya maybe I'm mistaken :d I dunno... Seems like you're on the right track.

Answer 12

OKAY GOT U SO a=-2 and r=x/2

Answer 13

u r right about the (-) sign

Answer 14

is r=1/2 or x/2

Answer 15

only 3 more to ----------->100 smart score yaaaa keep it up xD

Answer 16

hah XD