Question

Q2. Dadas as funções a seguir determine:

a) F(x) = 2x -1

F(0)

F(-1)

F(2)

F(-4)


b) F(x) = - x +2

F(0)

F(-3)

F(5)

F(-3)




c) F(x) = -2x -5

F
F(-3)

F(-1)

F(3)


d) F(x) = 3x + 4

F(5)

F(-2)

F(1)

F(2)

​

Answer 1

Resposta:

a) f(x)= 2x -1

f(0): 2.0 -1= 0-1= -1

f(-1): 2.-1 -1= -2-1= -3

f(2): 2.2 -1= 4-1= 3

f(-4): 2.-4 -1= -8-1= -9

b) f(x)= -x +2

f(0): -0 +2= 2

f(-3): -(-3) +2= 3+2= 5

f(5): -5+2= -3

f(-3): -(-3) +2= 3+2= 5

c) f(x)= -2x -5

f(-3): -2.-3 -5= 6-5= 1

f(-1): -2.-1 -5= 2-5= -3

f(3): -2.3 -5= -6-5= 11

d) f(x)= 3x +4

f(5): 3.5 +4= 15+4= 19

f(-2): 3.-2 +4= -6+4= -2

f(1): 3.1 +4= 3+4= 7

f(2): 3.2 +4= 6+4= 10