12 Replies
@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.On writing this out, Initial term and lim n tending to infinity-th remains and the rest gets telescoped.
And limit of terms as n terms to infinity is zero so yeah
so by putting the values will we come to know that terms r getting telescoped or how to identify that rest is getting telescoped...
@SirLancelotDuLac
Idhar in the 3rd line replace r by r+1 in the first term. This then becomes equal to -ve of the second term right?
So for every r+1, the first term cancels out the second terms of r.
oh yesss i get it thanks so we must first check by replacements like r+1 for telescope cutting , right?
@SirLancelotDuLac
Ye.
okk thank you!
I mean
Basically in these questions
You have to think how to split this in order to make this possible
ok!
+ solved @SirLancelotDuLac
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