Question

3) Dados f (x) = 2 x + 7, Calcule.
a) f(0)
b) f(1)
c) f(2)
d) f(3)
e) f(-1)
f) f(5)

Answer 1

Resposta:

3-A

$f(x)= 2x + 7\\f(0)= 2.0 + 7 \\f(0)= 0+7\\f(0)= 7$(0;7)

B

$f(x)= 2x+7\\f(1)= 2.1 + 7\\f(1)= 2 +7 \\f(1)= 9$(1;9)

C

$f(x)= 2x+7\\f(2)= 2.2+7\\f(2)= 4+7\\f(2)= 11$(2;11)

D

$f(x)= 2x+7\\f(3)= 2.3 +7\\f(3)= 6+7\\f(3)= 13$(3;13)

E

$f(x)=2x + 7\\f(-1)= 2.(-1) + 7\\f(-1)= -2 + 7\\f(-1)= 5$(-1;5)

F

$f(x)=2x +7\\f(5)= 2.5 +7\\f(5)= 10 + 7\\f(5)= 17$(5;17)

Explicação passo a passo:

espero que ajude

Answer 2

Resposta ↓

f(0) = 7

f(1) = 9

f(2) = 11

f(3) = 13

f(-1) = 5

f(5) = 17

Explicação passo a passo:

⇒ Para calcularmos, substituímos x por cada valor pedido em cada letra:

==============================================

✍ Cálculo:

${\sf f(x) = 2x + 7 }$

$a)\ f(0) 2.0 + 7\\\\\\a)\ f(0) = 0 + 7\\\\\\a)\ f(0) = 7\\\\\\=====================\\\\\\b)\ f(1) = 2.1 + 7\\\\\\b)\ f(1) = 2 + 7\\\\\\b)\ f(1) = 9\\\\\\=====================\\\\\\c)\ f(2) = 2.2 + 7\\\\\\c)\ f(2) = 4 + 7\\\\\\c)\ f(2) = 11\\\\\\=====================\\\\\\d)\ f(3) = 2.3 + 7\\\\\\d)\ f(3) = 6 + 7\\\\\\d)\ f(3) = 13$

$=====================\\\\\\e)\ f(-1) = 2.(-1) + 7\\\\\\e)\ f(-1) = - 2 + 7\\\\\\e)\ f(-1) = 5\\\\\\=====================\\\\\\f)\ f(5) = 2.5 + 7\\\\\\\\f)\ f(5) = 10 + 7\\\\\\f)\ f(5) = 17$

Espero ter ajudado :)

Att: LDC