Question

Determine :
A-f(2)
F(x)=5x

B-f(5)
F(x)=2x+4

C-f(1
F(x)=x/2x+1

Answer 1

Olá!!!

Resolução!!!

a)
f ( x ) = 5x
f ( 2 ) = 5 • ( 2 )
f ( 2 ) = 10

b)
f ( x ) = 2x + 4
f ( 5 ) = 2 • ( 5 ) + 4
f ( 5 ) = 10 + 4
f ( 5 ) = 14

c)
f ( x ) = x/2x + 1
f ( 1 ) = 1/2 • ( 1 ) + 1
f ( 1 ) = 1/2 + 1
f ( 1 ) = 1/2 + 2/2
f ( 1 ) = 3/2

Espero ter ajudado!!!