Use induction to prove that for every integer , . Here's the solution: I don't understand where the term came from in the middle line. Could anyone explain?
Last edited by Roam; Oct 24th 2009 at 09:37 PM.
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Originally Posted by Roam Use induction to prove that for every integer , . Here's the solution: I don't understand where the term came from in the middle line. Could anyone explain? Since , we know that and also that . Therefore,
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