Find the general term of A.P. whose sum of n terms is given by 4n+ 3n​

1 thought on “Find the general term of A.P. whose sum of n terms is given by 4n+ 3n​”

1. Answer:

   put (n=1) for sum of first ,n=2 for second ,n=3 for third and so on.

   S1 =4(1)+3(1)

   =7

   S2=4(2)+3(2)

   =14

   you can find d by only two but for making conform that it is an AP so I am also taking 3rd

   S3=4(3)+3(3)

   =21

   now ,a is sum of first much

   and A2 =S2-S1

   =7

   A3= S3-S2

   = 7

   you can se that common difference is zero

   d= a2-a1

   =7-7

   =0

   hence, AP

   7,7,7,7,7

   Sorry, I don’t explain properly, please don’t mind

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