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Constanciamaria
@Constanciamaria
April 2020
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Seja f: R - R a união definida por f(x) = -3x + 3. Determine o valor de f(1) - f(-2) + 2 f(3).
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Chaplin
Verified answer
F(1)= -3.(1) + 3= 0
f(2)= -3.(-2) + 3= 9
f(3)= -3(3) + 3= -6
f(1) - f(-2) + 2 f(3)= 0 -9 +2(-6) = -9 -12= -21
Feliz 2014! :)
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amandacamargo
É o mesmo que a resposta assim porém ele esqueceu se multiplicar a ultima função por dois.
F(1)=-3.(1)+3=0
F(-2)=-3.(-2)+3=9
F(3)=-3(3)+3=-6
F(1)-f(-2)+2f(3)= 0-9+2.-6=-21
0 votes
Thanks 0
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Verified answer
F(1)= -3.(1) + 3= 0f(2)= -3.(-2) + 3= 9
f(3)= -3(3) + 3= -6
f(1) - f(-2) + 2 f(3)= 0 -9 +2(-6) = -9 -12= -21
Feliz 2014! :)
F(1)=-3.(1)+3=0
F(-2)=-3.(-2)+3=9
F(3)=-3(3)+3=-6
F(1)-f(-2)+2f(3)= 0-9+2.-6=-21