Resolver las siguientes desigualdades, expresar la solucion como intervalo.
1-. 3-2/3 x ≤ 1
-2/3 x ≤ 1-3
(-1)-2/3 x ≤-2(-1)
x ≥ 3
[3,∞)
2-. 2x-1 ≤ 2x+4
-1 ≤ 4
[-1,4]
3-. 1/3 x + 1/2 < 2/3 - 5/2 x
1/3 x + 5/2 x < 2/3 - 1/2
17/6 x < 1/6
x < 1/17
(-∞ , 1/17)
4-. 1/2 x < -5x + 2/3
1/2 x +5x < 2/3
11/2 x < 2/3
x < 44/33
(-∞,4/33)
5-. 3 > 6 -3/5 x ≥ 1
-6+3 >-3/5 x ≥ 1-6
-3 >-3/5 x ≥ -5
(-1)-3>-3/5 x ≥ -5 (-1)
3 < 3/5 x ≤ 5
5 < x ≤ 25/3
(5,25/3]
domingo, 7 de septiembre de 2008
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