5. (i) Use PIE to prove that n (-1)^ (^) (n k) = n! k=0...

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5. (i) Use PIE to prove that n (-1)^ (^) (n − k)" = n! k=0 (ii) Evaluate the following when either 0 ≤ k < n or k = n or k>n Σ(-1² (7) ik i=0 5. (i) Use PIE to prove that n (-1)^ (^) (n − k)" = n! k=0 (ii) Evaluate the following when either 0 ≤ k < n or k = n or k>n Σ(-1² (7) ik i=0

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Let Pn 2 2 nk n KEO ter n 1 then P1 14 P1 is true Let pp is true PP1 Since 2 1 K PK ... View the full answer