If the sum of n terms of an A.P. is (pn + qn^2), where p and q are constants, find the common difference

+1 vote
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asked Feb 10, 2018 in Mathematics by Rohit Singh (61,782 points) 35 133 356

If the sum of n terms of an A.P. is (pn + qn2), where p and q are constants, find the common difference.

1 Answer

+1 vote
answered Feb 10, 2018 by sameer (82,980 points) 5 11 37
selected Feb 14, 2018 by sanjeev
 
Best answer

Comparing the coefficients of n2 on both sides, we obtain

Thus, the common difference of the A.P. is 2q.

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