Question

reciprocals of 3,4,6...are in ap then the common diffrence​

Answer 1

Answer:

Common difference can't be defined.

Step-by-step explanation:

Here,

        General term of APs is defined by 4n - n^2.

It means : for all the natural values of n, 4n - n^2 will contribute for an AP ( for consecutive n(s) ).

 For n = 1

       4n - n^2

     ⇒ 4( 1 ) - ( 1 )^2

     ⇒ 4 - 1

     ⇒ 3  = first term

 For n = 2

      4n - n^2

    ⇒ 4( 2 ) - 2^2

    ⇒ 8 - 4

    ⇒ 4

For n = 3

     4n - n^2

  ⇒ 4( 3 ) - 3^2

  ⇒ 12 - 9

  ⇒ 3

        Since these terms don't follow any rule, they are not AP.