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If the sum of first n terms of an A.P. i...

If the sum of first n terms of an A.P. is `cn^(2) `, then the sum of squares of these n terms is `:`

A

`(n(4 n^(2)-1))/(6) c^(2)`

B

`(n(4 n^(2)+1))/(3) c^(2)`

C

`(n(4 n^(2)-1))/(3) c^(2)`

D

`(n(4 n^(2)+1))/(6) c^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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