Question

The sum of the series ∑4/k=0(−1/2)^k

Answer 1

Answer:

11/16

Step-by-step explanation:

$\sum^{4}_{k=0} (-1/2)^k \\ \\ =\frac{1(1-(-1/2)^5)}{1-(-1/2)} \\ \\ =\frac{33/32}{3/2} \\ \\ =11/16$