calcule os valores de f(x),e esboce o gráfico das seguintes funções f(-1) ,f(-2) ,f(0), f(1), f(2)
a)f(x)=2x+3
b)f(x)=x+1
c)f(x)=4x-1
d)f(x)=3x+2
e)f(x)= -4x+2
f)f(x)= 5x+3
g)f(x)= 3x+1
Respostas
Resposta:
a) f(-1)= 5 f(-2)= -1 f(0)= 3 f(1)= 5 f(2)= 7
b) f(-1)= 0 f(-2)= -1 f(0)= 1 f(1)= 2 f(2)= 3
c) f(-1)= -5 f(-2)= -9 f(0)= -1 f(1)= 3 f(2)= 7
d) f(-1)= -1 f(-2)= -4 f(0)= 2 f(1)= 5 f(2)= 8
e) f(-1)= 6 f(-2)= 10 f(0)= 2 f(1)= -2 f(2)= -6
f) f(-1)= -2 f(-2)= -7 f(0)= 3 f(1)= 8 f(2)= 13
g) f(-1)= -2 f(-2)= -5 f(0)= 1 f(1)= 4 f(2)= 7
Explicação passo a passo:
a) f(-1)= 2.-1+3= 5
f(-2)= 2.-2+3= -1
f(0)= 2.0+3= 3
f(1)= 2.1+3= 5
f(2)= 2.2+3= 7
b)f(-1)= -1+1= 0
f(-2)= -2+1= -1
f(0)= 0+1= 1
f(1)= 1+1= 2
f(2)= 2+1= 3
c) f(-1)= 4.-1-1= -5
f(-2)= 4.-2-1= -9
f(0)= 4.0-1= -1
f(1)= 4.1-1= 3
f(2)= 4.2-1= 7
d) f(-1)= 3.-1+2= -1
f(-2)= 3.2+2= -4
f(0)= 3.0+2= 2
f(1)= 3.1+2= 5
f(2)= 3.2+2= 8
e) f(-1)= -4.-1+2= 6
f(-2)= -4.-2+2= 10
f(0)= -4.0+2= 2
f(1)= -4.1+2= -2
f(2)= -4.2+2= -6
f) f(-1)= 5.-1+3= -2
f(-2)= 5.-2+3= -7
f(0)= 5.0+3= 3
f(1)= 5.1+3= 8
f(2)= 5.2+3= 13
g) f(-1)= 3.-1+1= -2
f(-2)= 3.-2+1= -5
f(0)= 3.0+1= 1
f(1)= 3.1+1= 4
f(2)= 3.2+1= 7