[考古] 臺大85年微C考題
若 a , b 屬於R，且
1 + ax 2
lim ------- + --- + b = 0
x^2 x
x->0
求a,b之值。
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原本想說通分後用羅畢達可以求出 b = 0，
可是剛發現分子不等於零，不能用羅畢達。
目前毫無頭緒，
還請指點，謝謝！
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