推 wo0228:謝啦!!^^ 02/05 12:35
: : (2)if 0<=f(x) and [lim x→a f(x)=0] and [lim x→a g(x)=無窮大]
: : 則[lim x→a f(x)^g(x)]=?
: : 謝謝!!
g(x)
ln f(x)
lim e
x→a
g(x) ln f(x) ∞ * -∞ -∞
= lim e = e = e = 0
x→a
舉個例子
f(x) = x ， x→0
g(x) = 1/x^2， x→0
lnx
lim ────
x→0 x^2 -∞
e = e = 0
希望沒錯0.0
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