Question

How do you write the first five terms of the sequence `a_n=3n+1`?

Answer 1

`4,7,10,13,16`

Explanation:

`"to obtain the first 5 terms substitute "n=1,2,3,4,5"`
`"into "a_n`

`a_1=(3xx1)+1=3+1=4`

`a_2=(3xx2)+1=6+1=7`

`a_3=(3xx3)+1=9+1=10`

`a_4=(3xx4)+1=12+1=13`

`a_5=(3xx5)+1=15+1=16`

Answer 2

The first five terms are `:4,7,10,13,16.`

Explanation:

Here ,

`a_n=3n+1`

`n=1=>a_1=3(1)+1=3+1=4`

`n=2=>a_2=3(2)+1=6+1=7`

`n=3=>a_3=3(3)+1=9+1=10`

`n=4=>a_4=3(4)+1=12+1=13`

`n=5=>a_5=3(5)+1=15+1=16`

Hence ,the first five terms are `:4,7,10,13,16.`