12北语高数,

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12北语高数,
12北语高数,

 








12北语高数,
C g(x)=f(x)f(-x) g(-x)=f(-x)f(x) g(x)=g(-x)
C lim(1+t)^1/t = e t→0 t=2/x
D lim(1+t)^1/t = e t→0 t=-1/4x x=-1/4t
B
A
C t和sint是等价无穷小 C转化成lim (sin1/x) / (1/x) x→无穷大,1/x→0
B
B
D
A

C C D BAC BBDA