Question

If and term of an are respectively, then show that .

Hard
Updated on : 2022-09-05
Solution
verified
Verified by Toppr

Let first term of the A.P
and
common difference of the A.P
Now,



SubtractingΒ  from from and from we get

Multiply by respectively we have

Now,
Now since d is common difference it should be non zero

Hence,

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