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LauraPandinha
@LauraPandinha
December 2019
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Faça o estudo do sinal da função f(x)=2x+4
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kjmaneiro
Veja....
f(x)=2x+4
2x+4=0
2x=-4
x=-4÷2
x=-2
y=0 para x=-2
y>0 para {x ∈ Z | x < -2}
y<0 para { x ∈ Z | x > -2}
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f(x)=2x+4
2x+4=0
2x=-4
x=-4÷2
x=-2
y=0 para x=-2
y>0 para {x ∈ Z | x < -2}
y<0 para { x ∈ Z | x > -2}