Question

dada a função definida por: f(x) = 3x-2 calcule:

a) f (3)=
b) f (-1)=
c) f (0)=
d) f (2)=
e) f (-1/2)=
f) f (3/2)=

Answer 1

a) f(3) = 3.(3) - 2

f(3) = 9 - 2

f(3) = 7

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

f(-1) = -3 - 2

f(-1) = -5

c) f(0) = 3.(0) - 2

f(0) = -2

d) f(2) = 3.(2) - 2

f(2) = 6 - 2

f(2) = 4

e) f(-1/2) = 3.(-1/2) - 2

f(-1/2) = -3/2 - 2/1

f(-1/2) = (-3 - 4)/2

f(-1/2) = -7/2

f) f(3/2) = 3.(3/2) - 2

f(3/2) = 9/2 - 2/1

f(3/2) = (9 - 4)/2

f(3/2) = 5/2