Question

Dada as funções f : A⇒R onde A= {1;2;3} e f(x)=2x-1/2

Answer 1

Olá!!!

Resoluçao!!!

f ( x ) = 2x - 1/2

A = { 1, 2, 3, }

• f ( 1 )

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

• f ( 2 )

f ( x ) = 2x - 1/2
f ( 2 ) = 2 • ( 2 ) - 1/2
f ( 2 ) = 4 - 1/2
f ( 2 ) = ( 8 - 1 )/2
f ( 2 ) = 7/2

• f ( 3 )

f ( x ) = 2x - 1/2
f ( 3 )= 2 • ( 3 ) - 1/2
f ( 3 ) = 6 - 1/2
f ( 3 ) = ( 12 - 1 )/2
f ( 3 ) = 11/2

A = { 1......, 2 , ..,3 }
.........↓........↓......↓.......
B = { 3/2, 7/2, 11/2, }

Espero ter ajudado!!