Archive for May, 2010

Using Binomial Theorem in proving Combinatorial identities

1) Prove: Solution: The above expression can be simplified as Applying binomial theorem, setting x=1 and y=8 Thus, 2) Show that Solution: The simplified version of the above expression is Using binomial theorem, Letting x=1 Integrating both sides, setting y=1 The last step is solving for C If y=0, then Therefore,

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