Question

if an=2n+1 then the common difference of the AP ​

Answer 1

Answer:

an=2n+1

let n=1

a(1)=2(1)+1=3

let n=2

a(2)=2(2)+1=5

let n=3

a(3)=2(3)+1=7

let n=4

a(4)=2(4)+1=9

d=9-7=2

d=7-5=2

so,d is equal to 2