若不等式组{3-3x≥0 x-m≥0有实数解 则实数m的取值范围是
问题描述:
若不等式组{3-3x≥0 x-m≥0有实数解 则实数m的取值范围是
答
3-3x≥0,1≥x; x-m≥0, x≥m,要使得x有实数解,则1≥x≥m,要有意义,即1≥m
若不等式组{3-3x≥0 x-m≥0有实数解 则实数m的取值范围是
3-3x≥0,1≥x; x-m≥0, x≥m,要使得x有实数解,则1≥x≥m,要有意义,即1≥m