解不等式1/x-4小于等于1-x/4-x
问题描述:
解不等式1/x-4小于等于1-x/4-x
答
1/(X-4)≤(1-X)/(4-X)
1/(X-4)-(1-X)/(4-X)≤0
1/(X-4)+(1-X)/(X-4)≤0
(2-X)/(X-4)≤0
2≤X<4