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Rezolvați in R: f(x)•g(x)=-4
f(x)=-2x+3
g(x)=-2x-1


Răspuns :

Răspuns:

f(x)•g(x)=f(g(x))=-2g(x)+3=-2(-2x+1)+3=4x-2+3=4x+1

f(x)•g(x)=-4---->4x+1=-4---->4x=-5----x=-5/4