Question

The algebra of an arithmetic sequence is Xn=4n-2
a) Find its first term and common difference. (2) b) What is the position of the term 398?

Answer 1

Answer:

Given, arithmetic sequence X

n

=5n+3

a. The first term of the sequence, put n=1

X

1

=5×1+3=8

b. d=5 (coefficient of n be the common difference)

The remainder divide by 5=3.

(

5

8

=3,

5

13

=3,

5

18

=3,etc)