Question

ME AJUDEM POR FAVOR

dada a funçao do 1 grau f (x) =3x+2 A) F (2) B) F(3) C) F(-5) D) F (4)_+ (2) _
f(0)

2) dada a funçao do 2 grau F(X) =2x²+2X-2 DETERMINE

A) F (2) B) F( -3) C) F( 1 ) D) F(-2 ) + F( 1 )
F ( 0 )

Answer 1

f( x ) = 3x + 2

a) F (2) = 3.2 + 2 = 6 + 2 = 8

b) F(3)  = 3.3 + 2 = 9 + 2 = 11
 
c) F(-5)  = 3.(-5) + 2 = -15 + 2 = 13

d)
f(x) = 3x + 2
f(4) = 3.4 + 2 = 12 + 2 = 14
f(2) = 3.2 + 2 = 6 + 2 = 8
f(0) = 3.0 + 2 = 0 + 2 = 2

d)   f(4) + f(2)    =  14 + 8
      --------------      -----------  = 22/2 = 11
          f(0)                   2


2) Dada a função do 2 grau F(x) = 2x² + 2x - 2, DETERMINE:

A) F (2) = 2.2² + 2.2 - 2 = 2.4 + 4 - 2 = 8 + 2 = 10

B) F( -3) = 2.(-3)² + 2.(-3) - 2 = 2.9 - 6 - 2 = 18 - 8 = 10

C) F( 1 ) = 2.1² + 2.1 - 2 = 2.1 + 2 - 2 = 2 + 0 = 2

d) 
f(x) = 2x² + 2x - 2
f(4) = 2.4² + 2.4 - 2 = 2.16 + 8 - 2 = 32 + 6 = 38
f(2) = 2.2² + 2.2 - 2 = 2.4 + 4 - 2 = 8 + 2 = 10
f(0) = 2.0² + 2.0 - 2 = - 2

f(4) + f(2)   =  38 + 10
--------------     ------------- = 48/(-2) = - 24
   f(0)                 - 2