whats the solution to |-7x| ≤ 7?
回答 (7)
2009-07-05 7:11 am
✔ 最佳答案
-7x<=+7x>=1
7x<=7
x<=1
2009-07-05 10:27 pm
|- 7x| <= 7
- 7x <= 7
- x <= 1
x >= - 1
|- 7x| <= - 7
- 7x <= - 7
- x <= - 1
x <= 1
Answer: x >= - 1, x <= 1
- 7x <= 7
- x <= 1
x >= - 1
|- 7x| <= - 7
- 7x <= - 7
- x <= - 1
x <= 1
Answer: x >= - 1, x <= 1
2009-07-05 5:04 pm
|-7x| ⤠7
-7x ⤠7 -- or -- -7x ⥠-7
-7x ⤠7
x ⥠7/(-7)
x ⥠-1
-7x ⥠-7
x ⤠-7/(-7)
x ⤠1
ⴠ-1 ⤠x ⤠1
-7x ⤠7 -- or -- -7x ⥠-7
-7x ⤠7
x ⥠7/(-7)
x ⥠-1
-7x ⥠-7
x ⤠-7/(-7)
x ⤠1
ⴠ-1 ⤠x ⤠1
2009-07-05 3:27 pm
- 7 ⤠- 7x ⤠7
- 7x ⤠7 ,___________- 7x ⥠- 7
- 7 ⤠7x , __________7 ⥠7x
x ⥠- 1___________x ⤠1
{ x : - 1 ⤠x ⤠1 , x РR }
- 7x ⤠7 ,___________- 7x ⥠- 7
- 7 ⤠7x , __________7 ⥠7x
x ⥠- 1___________x ⤠1
{ x : - 1 ⤠x ⤠1 , x РR }
2009-07-05 2:09 pm
|-7x| ⤠7
(7x)/7 ⤠7/7
x ⤠1
(7x)/7 ⤠7/7
x ⤠1
2009-07-05 2:07 pm
what's ever inside has to be 'equal' to the -/+ of the outside
don't fprget the - rule and inequalities
don't fprget the - rule and inequalities
2009-07-05 2:09 pm
same as I7xI<=7
-7<=7x<=7
-1 <=x <=1
-7<=7x<=7
-1 <=x <=1
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