解不等式(½)2ײ-3×-2≤1解?
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/10 22:43:27
解不等式(½)2ײ-3×-2≤1解?
![解不等式(½)2ײ-3×-2≤1解?](/uploads/image/z/19139744-56-4.jpg?t=%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F%28%26%23189%3B%292%C3%97%26%23178%3B%EF%BC%8D3%C3%97%EF%BC%8D2%E2%89%A41%E8%A7%A3%3F)
(½)2ײ-3×-2≤1
ײ-3×+9/4≤21/4
(×-3/2)²≤21/4
-√21/2≤×≤√21/2
(3-√21)/2≤×≤(3+√21)/2
ײ-3×+9/4≤21/4
(×-3/2)²≤21/4
-√21/2≤×≤√21/2
(3-√21)/2≤×≤(3+√21)/2