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数学
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曲线y=lnx在点M(e,1)处的切线的斜率是______,切线的方程为______.
人气:208 ℃ 时间:2019-08-20 20:45:59
解答
y′=
1
x
,切点为M(e,1),
则切线的斜率k=
1
e
,
切线方程为:y-1=
1
e
(x-e)化简得:x-ey=0
故答案为:
1
e
,x-ey=0
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