[微積] 我有2題大一微積分的證明 有人能教我嗎??

[eri820503 (money)]

第一題:

prove that lim x^1/2*e^SIN(兀/X)=0
           x→0


第二題:
Show by means of an example that

lim [f(x)*g(x)] may exist even though neither
x→a

lim f(x) nor lim g(x) exists.
x→a         x→a


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