Question

1)Determine a função de zero; F(x)=3x-15 F(x)=4x+12 F(x)=5x-20 2) Dado os conjuntos: A={2,6} e B={2,3} Determine: A-B= B-A= AxB= BxA= 3) Determine f(4) na função f(x)=5x-6 3) Determine (g e o f) , sendo g(x)=6x+3 f (x)=4x

Answer 1

1)

F(x)=3x-15
F(0)=3x0-15
F(0)=0-15
F(0)=-15


F(x)=4x+12
F(0)=4x0+12
F(0)= 4+12
F(0)=16


F(x)=5x-20
F(x)=5x0-20
F(x)=5-20
F(x)=-15

3)

f(x)= 5x-6
F(4)=5x4-6
F(4)=20-6
F(4)=14

G(x)=6x+3
G(4)=6x4+3
G(4)=24+3
G(4)=27

F(x)=4x
F(4)=4x4
F(4)=16