Question

Dada à função f (x)=3x-1 , determine
A) f(1) - f(0)
B) f(2)-f(1)
C)f(3)-f(2)
D)f(4)-f(3)

Answer 1

Olá, Elias!

Temos que:

f(x)=3x-1

a)

f(1)=3.1-1=2

f(0)=3.0-1=-1

f(1)-f(0)=

2 - (-1)=

2 + 1 = 3

b)

f(2)-f(1)=

(3.2-1) - (3.1 - 1) =

5 - 2 = 3

c)

f(3)-f(2) =

(3.3-1) - (3.2 - 1) =

8 - 5 = 3

d)

f(4) - f(3) =

(3.4-1) - (3.3 - 1) =

11 - 8 = 3

Espero ter ajudado!

Answer 2

a)

f(1)=3.1-1=2

f(0)=3.0-1=-1

f(1)-f(0)=

2 - (-1)=

2 + 1 = 3

b)

f(2)-f(1)=

(3.2-1) - (3.1 - 1) =

5 - 2 = 3

c)

f(3)-f(2) =

(3.3-1) - (3.2 - 1) =

8 - 5 = 3

d)

f(4) - f(3) =

(3.4-1) - (3.3 - 1) =

11 - 8 = 3