limiting sum question help. (1 Viewer)

[bananarama69]

can someone help me with this question.
The limiting sum of a series 1+x+x₂+x₃+... is 10, find x
x just doesnt want me to find it lol

 

[Drongoski]

I take it the geometric series is: 1 + x + x² + x³ + . . . .

Then limiting sum = " a/(1-r) " = 1/(1-x) = 10 ==> x = 9/10 = 0.9