lim [(x^2 +1)/(x^2 -1)]^(x^2)
x->∞
=lim [(1+2/(x^2 -1)]^(x^2)
x->∞
=lim [(1+2/(x^2 -1)^(x^2 -1/2)]^(2/x^2 -1)(x^2)
x->∞
= lim (2x^2)/(x^2-1)
e^x->∞
=e^2
呼，打的有點亂，我這樣算應該沒錯，答案應該有問題吧！？
第二提就麻煩高手了，我不會算orz
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