Question

If x=1+y+y^2+....infinity ,y=?

Answer 1

@hartnn

Answer 2

if
\[|y|<1\]
then
\[x=\frac{1}{1-y}\]
Can you find y from this in terms of x??

Answer 3

it is sum to infinite G.P

Answer 4

how do I know if y is less than one or greater than that?

Answer 5

im feeling embarrassed

Answer 6

\[x = 1 + y(1+y + y^2...)\]

Answer 7

lol

Answer 8

if \(y\ge 1\)
then
\[x=\infty\]

Answer 9

\[\LARGE 1-y=\frac{1}{x}=>y=1-\frac{1}{x}=>\frac{x-1}{x}?\]

Answer 10

yeah :)

Answer 11

aww I did it wrong in exam D:

Answer 12

oops :(

Answer 13

\[\frac{x}{1-x}\] i did this >.<

Answer 14

thanks guys :o