Sequence and Series

Question 1

What is the equation for an Arithmetic Sequence?

Answer 1

u = a + (n-1)d
u = value of term
a = 1st term
n = number of term
d = constant difference

Question 2

What is the equation for the Arthimetic series?

Answer 2

s = (n/2) x 2a-(n-1)d]
s = sum
n = number of term
a = 1st term
d = comstant difference

Question 3

What is an eqation for the Arithmetic series when the final value is known?

Answer 3

s = (n/2) (a+l)
s = sum
n = number of term
a = 1st term
l = last term

Question 4

What is the equation for a Geometric Sequence?

Answer 4

u = ar^(n-1)
u = value of term
a = 1st term
r = constant ratio
n = number of term

Question 5

What is the equation for Geometric Series?

Answer 5

s = a(r^n -1)/(r-1)
s =sum
a = 1st term
r = constant ratio
n = number of term