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> 已知关于x的方程=3的解是正数,则m的取值范围为____________.-九年级数学
已知关于x的方程=3的解是正数,则m的取值范围为____________.-九年级数学
题目简介
已知关于x的方程=3的解是正数,则m的取值范围为____________.-九年级数学
题目详情
已知关于x的方程
=3的解是正数,则m的取值范围为____________.
题型:填空题
难度:偏易
来源:不详
答案
m>-
,且m≠-
.
试题分析:分式方程去分母转化为整式方程,表示出x,根据x为正数列出关于m的不等式,求出不等式的解集即可确定出m的范围.
试题解析:分式方程去分母得:2m+3=3(x-2),
解得:x=
(2m+3)+2,
根据题意得:
(2m+3)+2>0,且
(2m+3)+2≠2,
去分母得:2m+3+6>0,
解得:m>-
,且m≠-
.
考点: 分式方程的解.
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题目简介
已知关于x的方程=3的解是正数,则m的取值范围为____________.-九年级数学
题目详情
答案
试题分析:分式方程去分母转化为整式方程,表示出x,根据x为正数列出关于m的不等式,求出不等式的解集即可确定出m的范围.
试题解析:分式方程去分母得:2m+3=3(x-2),
解得:x=
根据题意得:
去分母得:2m+3+6>0,
解得:m>-
考点: 分式方程的解.