lim(x趋于-2)x^2-x-6/x^2+3x+2

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/23 23:12:45
lim(x趋于-2)x^2-x-6/x^2+3x+2lim(x趋于-2)x^2-x-6/x^2+3x+2lim(x趋于-2)x^2-x-6/x^2+3x+2原式=lim(x趋于-2)(x-3)(x+2

lim(x趋于-2)x^2-x-6/x^2+3x+2
lim(x趋于-2)x^2-x-6/x^2+3x+2

lim(x趋于-2)x^2-x-6/x^2+3x+2
原式=lim(x趋于-2)(x-3)(x+2)/(x+1)(x+2)
=lim(x趋于-2)(x-3)/(x+1)
=(-2-3)/(-2+1)
=5