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5. (5a) Let f, g : R¹ → R be CN and suppose a € Nº with |a| ≤ N. Prove that ª(f g)= Σ B+y=a B,YEN¹ a! B!y! -aß farg.
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5. (5a) Let f, g : R¹ → R be CN and suppose a € Nº with |a| ≤ N. Prove that ª(f g)= Σ B+y=a B,YEN¹ a! B!y! -aß farg.
5. (5a) Let f, g : R¹ → R be CN and suppose a € Nº with |a| ≤ N. Prove that ª(f g)= Σ B+y=a B,YEN¹ a! B!y! -aß farg.
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