lim x→
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/21 21:59:20
lim x→
lim x→<(√(x+3)-2)/(x-1)>
lim x→
lim x→1<(√(x+3)-2)/(x-1)>
=lim x→1<(√(x+3)-2)(√(x+3)-+2)/(x-1)(√(x+3)+2)>
=lim x→1<(x-1)/(x-1)(√(x+3)+2)>
=lim x→1<1/(√(x+3)+2)>
=1/(√4 +2)
=1/(2+2)
=1/4
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