求解,数学7(3)
来源:学生学帮网 编辑:学帮网 时间:2024/07/02 12:04:05
求解,数学7(3)
(1-x-1)/1-x-(1-x2)/x2
=[(1-x-1)/(1-x)][1-x^2]/x^2
=-x(1-x)(1+x)/[x^2(1-x)]
=-(1+x)/x
=-1-1/x
7(3)答案:-(1+x)/x
求解,数学7(3)
(1-x-1)/1-x-(1-x2)/x2
=[(1-x-1)/(1-x)][1-x^2]/x^2
=-x(1-x)(1+x)/[x^2(1-x)]
=-(1+x)/x
=-1-1/x
7(3)答案:-(1+x)/x