limx→0x^2/x-1怎么解

题目详情

limx→0 x^2/x-1怎么解

▼优质解答

答案和解析

limx→0 x^2/(x-1)=limx→0 [(x^2-1)+1]/(x-1)
=limx→0 [(x-1)(x+1)+1]/(x-1)
=limx→0 (x+2)
=2

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