(2x-1)/3-(10x+1)/6大于等于5/4x-5

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 16:53:49
(2x-1)/3-(10x+1)/6大于等于5/4x-5
xP;N0d#˟8f wHU"* D[Ah\ggWJ .f=[e:8`Dvx/N08Q7woBiL@ɥNg-, uSW+1DraB"|%Ĩ+r]*ʓٶuu׼vߵ\mFn/cevXP"!M"rx,<%OEuV+;7]}މ]!$](rb 0|'}^Nz i{=g

(2x-1)/3-(10x+1)/6大于等于5/4x-5
(2x-1)/3-(10x+1)/6大于等于5/4x-5

(2x-1)/3-(10x+1)/6大于等于5/4x-5
(4x-2-10x-1)/6>=5/4x-5
-6x-3>=30/4x-30
27>=(30x+24x)/4
108>=54x
x<=2

不等式两边同乘以6*(4x-5)
得:16*x方-28x+10-40x方+46x+5-30≥0
化简得:(2x-1)*(4x+5)≤0
分两种情况:2x-1≤0 4 x+5≥0 x≥1/2 x≤-5/4 或2x-1≥0 4 x+5≤0 -5/4≤ x≤1/2