quiz 3

Question 1

for finite geometric sums S subn =

Answer 1

a(1-r^n)/(1-r)

Question 2

when does limit as n approaches ∞ of r^n exist?

Answer 2

r=0 means nothing
0< |r| < 1, lim n->∞ r^n = 0
|r| >= 1, limit DNE

Question 3

in sequences if degree numerator < degree denominator

Answer 3

limit n->∞ = 0

Question 4

in sequences if degree numerator = degree denominator

Answer 4

limt n->∞ = ratio of lead coefficient

Question 5

in sequences if degree numerator > degree denominator

Answer 5

lim n->∞ = +-∞