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Delayofgame2009
@Delayofgame2009
April 2020
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Determine o domínio das funções reais a seguir:(estão na imagem)
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SENARONEI
A)2x-4#0
2x#4
x#2
D=(xeR/x#2)
b)2-x> ou =0
-x>ou=-2 (-1)
x<ou=2
denominador: x-7#0
x#7
D=(xeR/x<ou=2 e x#7)
c)x²-4x+3=0
delta= (-4)²-4.1.3=4
x=4+-2/dividido por 2.(1)
x1=3
x2=1
D=(xeR/1<ou=x<ou=3)
E)x²-6x+9
delta= (-6)²-4.1.9= 0
x=6+-0/dividido 2.(a)
x1 e x2= 3
depois: x+3#0
x#-3
D=(xeR/0<ou=x<ou=3 e x#-3)
Já te mando as outras
4 votes
Thanks 3
delayofgame2009
blz,manda ai por favor
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2x#4
x#2
D=(xeR/x#2)
b)2-x> ou =0
-x>ou=-2 (-1)
x<ou=2
denominador: x-7#0
x#7
D=(xeR/x<ou=2 e x#7)
c)x²-4x+3=0
delta= (-4)²-4.1.3=4
x=4+-2/dividido por 2.(1)
x1=3
x2=1
D=(xeR/1<ou=x<ou=3)
E)x²-6x+9
delta= (-6)²-4.1.9= 0
x=6+-0/dividido 2.(a)
x1 e x2= 3
depois: x+3#0
x#-3
D=(xeR/0<ou=x<ou=3 e x#-3)
Já te mando as outras