Question

1) Dada a função do 1ª grau f(x) = (1-5x), Determine: a) f (0) b) f (-1) c) f (1/5) d) f (-1/5)

Answer 1

Resposta:

a) f (0) = 1

b) f (-1) = 6

c )f (1/5) = 0

d) f (-1/5) = 2

Explicação passo-a-passo:

f(x) = (1-5x)

a) f (0) = (1-5*(0)) = 1-0= 1

b) f (-1) = (1-5*(-1)) = 1-(-5)= 1+5 = 6

c) f (1/5) = $(1-5*(\frac{1}{5} ))$ = 1 - $\frac{5}{5}$ = 1-1 = 0

d) f (-1/5) = $(1-5*(\frac{-1}{5}))$ = 1 - $\frac{-5}{5}$ = 1 + $\frac{5}{5}$ = 1+1 = 2

Answer 2

f(x) = (1-5x)

Calculando:

a) f(0) =

f(x) = (1-5x)

f(0) = (1-5.0)

f(0) = ( 1-0)

f(0) = 1

b) f(-1) =

f(x) = (1-5x)

f(-1) = ( 1- 5.(-1))

f(-1) = ( 1 - (-5)

f(-1) = ( 1 + 5)

f(-1) = 6

c) f(1/5) =

f(x) = (1-5x) =

f(1/5) = ( 1- 5.(1/5) =

f(1/5) = ( 1 - 1)

f(1/5) = 0

d) f(-1/5) =

f(x) = (1-5x)

f(-1/5) = (1-5.(-1/5))

f(-1/5) = ( 1 - (-1))

f(-1/5) = ( 1 + 1 )

f(-1/5) = 2

Resultados:

a) 1

b) 6

c) 0

d) 2

Bons estudos :)

Anjinha.