Question

Dada a função =2x-3, calcule.
A) x=-3
B) x= 0
C) x= -1/3
D) x= 1,4
E) x= -0,3
F) x= 6
G) x= 3/5
H) x= -1,5
I) x= 3/5
J) x= -1​

Answer 1

Resposta:

a) -9; b)-3; c) -11/3; d)-0,2; e)-3,6; f) 9; g)9/5; h) -6; i) 9/5; j)-5;  

Explicação passo-a-passo:

a) f(x)=2x-3

f(-3) = 2.(-3) -3

f(-3) = -6-3

f(-3) = -9

b) f(x) = 2x-3

f(0)= 2.0-3

f(0) =0-3

f(0)=-3

c) f(x) = 2x-3

f(-1/3) = 2.(-1/3) -3

f(-1/3) = (-2/3) -3

f(-1/3) =[3.(-3)-2]/3

f(-1/3) =[-9-2]/3

f(-1/3)=-11/3

d) f(x) = 2x-3

f(1,4) = 2.(1,4) -3

f(1,4) = 2,8 -3

f(1,4) = - 0,2

e) f(x) = 2x - 3

f( -0,3) = 2. (-0,3) - 3

f(-0,3) = -0,6 - 3

f(-0,3) = - 3,6

f) f(x) = 2x - 3

f(6)= 2.(6) - 3

f(6)= 12 - 3

f(6) = 9

g) f(x) = 2x - 3

f( 3/5) = 2.(3/5) - 3

f(3/5) = 6/5 - 3

f(3/5) =[(-3.5)+6]/5

f(3/5)= 9/5

h) f(x) = 2x - 3

f(-1,5) = 2.(-1,5) - 3

f(-1,5) = -3 -3

f(-1,5) = -6

i) f(x) = 2x - 3

f(3/5) = 2.(3/5) - 3

f(3/5) = (6/5) - 3

f(3/5) = 9/5

j) f(x)= 2x - 3

f(-1) = 2.(-1) - 3

f(-1) = -2 -3

f(-1) = -5