Geometric Series

Question 1

Nth term (An) (geometric)

Answer 1

A1*r^(n-1)

Question 2

Ratio (geometric)

Answer 2

An/A(n-1)

Question 3

Sum to nth term (geometric)

Answer 3

A1(1-r^n/1-r)

Question 4

Sum to infinity (geometric)

Answer 4

A1/1-r

Question 5

Implicit formula (arithmetic)

Answer 5

An=An-1+d

Question 6

Nth term (arithmetic)

Answer 6

An=a+(n-1)d