(a) x< 1 and x< 5
(b) x≦3.7 and x > -1.6
(c) x≧9 / 7 and x≦ 1 / 3
(d) x≧ -2 and x≦ -2
(e) x< 3 / 4 and x ≦ 7 / 8
(f) x≧ -4 and x< -5
更新1:
&gE = 大過或等於 &lE = 小過或等於
Inequalities and linear Programming
2008-06-01 6:51 am
Solve the following compound inequalities and represent the solutions graphically.
(a) x< 1 and x< 5
(b) x≦3.7 and x > -1.6
(c) x≧9 / 7 and x≦ 1 / 3
(d) x≧ -2 and x≦ -2
(e) x< 3 / 4 and x ≦ 7 / 8
(f) x≧ -4 and x< -5
(a) x< 1 and x< 5
(b) x≦3.7 and x > -1.6
(c) x≧9 / 7 and x≦ 1 / 3
(d) x≧ -2 and x≦ -2
(e) x< 3 / 4 and x ≦ 7 / 8
(f) x≧ -4 and x< -5
回答 (1)
2008-06-03 9:16 pm
✔ 最佳答案
(a) x< 1 and x< 5(-infinity, 1)
(b) x≦3.7 and x > -1.6
(-1.6, 3.7]
(c) x≧9 / 7 and x≦ 1 / 3
No solution
(d) x≧ -2 and x≦ -2
x = -2
(e) x< 3 / 4 and x ≦ 7 / 8
(-infinity, 3/4)
(f) x≧ -4 and x< -5
No solution
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