the recently discussed method to solve recursive functions

Prophet sir had recently taught a method to deal with recursive functional relations
i have doubt regarding that :
this thread was solved long back using substitution technique

http://targetiit.com/iit-jee-forum/posts/full-throttle-3527.html

can we approach this question using the concept of annihilators

2 Answers

62
Lokesh Verma ·

I am not sure by what you mean by this..

may be prophet sir or kaymant sir can help us..

but for me i think that to recognize the annhilators in this case would not be very simple at the first place.

39
Dr.House ·

exactly what do u propose to use by using the concept of annihilators??

and moreover its not always easy to do that way. (rather that method being easy is very rare accord to me and sums i have solved)

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