|x-1| <= 5/2
means x-1 <= 5/2 and x-1 >=-5/2
means x <= 7/2 and > - 3/2
or -3/2 <= x <= 7/2
2007-01-02 05:44:52
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answer #1
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answered by Mein Hoon Na 7
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|x - 1| <= 5/2
First divide into the three separate equations hidden by the absolute value sign. If (x - 1)> 0, x - 1 is positive and <= 5/2. If x - 1 < 0, -(x -1), 1 - x is positive and less than 5/2. If x - 1 = 0, x = 1, and satisfies the equation.
Now, if 0 < x -1<=5/2, adding one to all three sides of the inequality shows that x must be greater than one and less than or equal to 5/2 +1, or 7/2. So this inequality becomes 1 < x <= 7/2. Since x can also equal 1, we combine the zero case into this inequality and get 1 <= x <=5/2.
This leaves the negative case. 0 < 1 - x <= 5/2. Multiply the inequalities by -1, and flip to get the positive inequality. So, -5/2 <= x -1 < 0. Now adding 1 to all three statements, -3/2 <= x < 1. x = 1 is exactly the lower boundary for the previous case, so we can put both inequalities together to get -3/2<= x <= 7/2.
2007-01-02 06:11:29
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answer #2
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answered by Edgar Greenberg 5
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-5/2=
-3/2 = < x <=7/2
2007-01-02 06:29:17
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answer #3
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answered by Anonymous
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For |x-1| <= 5/2, separate into two equations:
x-1 <= 5/2 and x-1 >= -5/2
x <= 5/2 + 1 and x >= (-5/2) + 1
x <= 7/2 and x >= (-3/2)
2007-01-02 05:47:25
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answer #4
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answered by MamaMia © 7
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Been a whilst considering the fact that I surely have performed those. First minus a million from the two edge. you should get 5<_ (5/2)x<15. next you should divide the two edge through five/2. 2_
2016-11-25 22:47:27
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answer #5
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answered by ? 4
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|x-1| <= 5/2
x-1 <= 5/2 and x-1>= -5/2
x <= 7/2 and x >= -3/2
Result: -3/2 <= x <= 7/2
2007-01-02 05:45:34
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answer #6
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answered by Jason L 5
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5/2 = 2.5
You need to do this twice: once for the case with x-1 is negative and once for the case with x-1 is positive:
x-1 is :Positive
x-1<=5/2
(Add one to both sides)
x<=2.5 +1
x<=3.5
x-1 is negative:
x-1>=-2.5
(Add one to both sides)
x>=-1.5
So: X >=-1.5 and x<=3.5
2007-01-02 05:54:15
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answer #7
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answered by L Dawg 3
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x-1≤5/2
x≤5/2+2/2
x≤7/2
x-1≤-5/2
x≤-5/2+2/2
x≤-3/2
-3/2≤x≤7/2
2007-01-02 05:49:05
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answer #8
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answered by Anonymous
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