Question

Write the sum using summation notation, assuming the suggested pattern continues.

4 - 12 + 36 - 108 +

Answer 1

What's the sum of of a goematric sequence. Do you know it

Answer 2

-110?

Answer 3

?

Answer 4

No the sum expression what is it. And you cannot sum by the way we don't have how many terms to sum they are just asking for the expression in terms ofof ratio and the first term

Answer 5

would it be \[\sum_{n=0}^{\infty} 4 \times 3n\]

Answer 6

@xapproachesinfinity

Answer 7

i mean 3n-1

Answer 8

The ratio is negative 3, and it's r^n-1 sum from 0 to n-1