Precal Help???

Question

Rewrite the sum using sigma notation.

(5/2) - (5/4) + (5/8) - (5/16) + (5/32) - (5/64) + (5/128) 

 

 

j = 1

 

Answer 1

The sum is .

Rewrite the sum as : .

.

So, the sum can be written as  using sigma notation.