運用羅必塔法則:
(e-e^x)'/(x-1)'=(-e^x)/1=-e^x
令x=1,-e^x=-e
lim[(e -e^x)/(x-1)]=-e
lim(x趨向1)(e-e^x)/(x-1)=
lim(x趨向1)(e-e^x)/(x-1)=
數(shù)學(xué)人氣:649 ℃時間:2020-03-31 01:10:41
優(yōu)質(zhì)解答
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