Question: Prove each formula by mathematical induction. (You may need to review the method of proof by induction from a precalculus text.) (a) (b) n i=

Prove each formula by mathematical induction. (You may need to review the method of proof by induction from a precalculus text.)

(a)n i= 2i = n(n + 1)

(b)

n i= 2i = n(n + 1)

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