Question

URGENT

Which of the following is the correct expanded form for the series below?
Σ
n=0

Answer 1

Hello,

`$$\sum_(n=0)^4$$((1)/(2))^(n) =(-(1)/(2))^(0)+(-(1)/(2))^(1)+(-(1)/(2))^(2)+(-(1)/(2))^(3)+(-(1)/(2))^(4)=1-(1)/(2) +(1)/(4) -(1)/(8)+(1)/(16)`