Question: With reference to the generalized definition of binomial coefficients in Exercise 1.19, show that (a) (b) -l r) = (1)r (n+r-1 for n>0

With reference to the generalized definition of binomial coefficients in Exercise 1.19, show that

(a)

-l r) = (1)r (n+r-1 for n>0

(b)

-l r) = (1)r (n+r-1 for n>0

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