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Mariana4590
@Mariana4590
December 2019
2
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Resolva em R,as inequaçoes:
a) 2x-1>0
b) -4x+3<0
c) -2x<0
d) 3x+6>0
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A)2x>1
x>1/2
b)4x-3>0
4x>3
x>3/4
c)2x>0
x>0
d)3x+6>0
3x>-6
x>-2
lembrando que sempre que o x estiver negativo o sinal inverte ex
-2x>0
2x<0
1 votes
Thanks 1
Titaniun2000
A) 2x -1 > 0
2x > 1
x > 1/2
b) -4x +3 < 0
-4x < -3 (-1)
4x > 3
x > 3/4
c) -2x < 0 (-1)
2x > 0
x > 0/2
x >0
d) 3x + 6 > 0
3x > -6
x > -6/3
x > -2
3 votes
Thanks 1
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x>1/2
b)4x-3>0
4x>3
x>3/4
c)2x>0
x>0
d)3x+6>0
3x>-6
x>-2
lembrando que sempre que o x estiver negativo o sinal inverte ex
-2x>0
2x<0
2x > 1
x > 1/2
b) -4x +3 < 0
-4x < -3 (-1)
4x > 3
x > 3/4
c) -2x < 0 (-1)
2x > 0
x > 0/2
x >0
d) 3x + 6 > 0
3x > -6
x > -6/3
x > -2