[考古] 94台大第一題
lim (x^2+2x)^1/2-x
x->無窮
我的解法:
(x^2+2x)^1/2 - 1
----------- = 2
x (1+ -)^1/2 - 1 = (1+0)^1/2-1=1-1=0
x
我算出來是0,可是網路參考答案是1 ˊˋ
請問我哪邊算錯了嗎
有看過網路上的解題過程,看不懂,把分母變得很複雜,1就蹦出來了......ˊˋ
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