For positive integers n and k, prove the following identities: (i) (ii) (iii) k (iv) (v) (vi)
Question:
For positive integers n and k, prove the following identities:
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(i) (ii) (iii) k (iv) (v) (vi) n k+1 A-3 k n n k n n n k [23] - n k n- k (n+k-1) n+ - n+k-1 n-1 (2n)! (n! 2) n n 2; - n D[k1]; n k - 1/2n 2 n
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