Question

Dada a função f(x)=2x-1, determine:

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

Answer 1

Dada a função f(x)=2x-1, determine:
a) f(2)
f(x) = 2x - 1
f(2) = 2(2) - 1
f(2) =  4    - 1
f(2) = 3

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

c) f(1)
f(x) = 2x - 1
f(1) = 2(1) - 1
f(1) = 2 - 1
f(1) = 1

d) f(0)
f(x) = 2x - 1
f(0) = 2(0) - 1
f(0) = 0 - 1
f(0) = - 1

e) f(1/2)
f(x) = 2x - 1
f(1/2) = 2(1/2) - 1
f(1/2) = 2/2 - 1
f(1/2) =   1  - 1
f(1/2) = 0