Explicit Formulas

Question 1

Arithmetic Explicit

Answer 1

An=A1 + D(N-1)

Question 2

Arithmetic Sum Finite

Answer 2

Sn=N/2 * (A1 + An)

Question 3

Arithmetic Sum Infinite

Answer 3

None

Question 4

Geometric Explicit

Answer 4

An=A1 * R^(N-1)

Question 5

Geometric Sum Finite

Answer 5

Sn=A1(1-R^n)/(1-R)

Question 6

Geometric Sum Infinite

Answer 6

A1/(1-R)