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1) ATRIBUINDO-SE VALORES PARA X,-1,0,1,2,3,CALCULE O VALOR DE 'Y' NAS SEGUINTES FUNÇÕES:
A)Y=X²-2X+1
B)Y=X²-X+2
C)Y=X²+2X-3
D)Y=X²+2X
E)Y=X²
F)Y=X²+2X+1
G)Y=X²+1
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Soluções para a tarefa
x = - 1: (-1)² - 2.(-1) + 1 = 1 + 2 + 1 = 4
x = 0: 0² - 2.0 + 1 = 0 - 0 + 1 = 1
x = 1:1² - 2.1 + 1 = 1 - 2 + 1 = 2 - 2 = 0
x = 2: 2² -2.2 + 1 = 4 - 4 + 1 = 0 + 1 = 1
x = 3: 3² - 2.3 + 1 = 9 - 6 + 1 = 10 - 6 = 4
b) y = x² - x + 2
x = - 1: (-1)² - (-1) + 2 = 1 + 1 + 2 = 4
x = 0: 0² - 0 + 2 = 0 - 0 + 2 = 2
x = 1: 1² - 1 + 2 = 1 - 1 + 2 = 0 + 2 = 2
x = 2: 2² - 2 + 2 = 4 - 2 + 2 = 6 - 2 = 4
x = 3: 3² - 3 + 2 = 9 - 3 + 2 = 11 - 3 = 8
c) y = x² + 2x - 3
x = - 1: (-1)² + 2.(-1) - 3 = 1 - 2 - 3 = 1 - 5 = - 4
x = 0: 0² +2.0 - 3 = 0 + 0 - 3 = - 3
x= 1: 1² + 2.1 - 3 = 1 + 2 - 3 = 3 - 3 = 0
x = 2: 2² + 2.2 - 3 = 4 + 4 - 3 = 8 - 3 = 5
x = 3: 3² + 2.3 - 3 = 9 + 6 - 3 = 15 - 3 = 12
d) y = x² + 2x
x = - 1: (-1)² + 2(-1) = 1 - 2 = - 1
x = 0: 0² + 2.0 = 0 + 0 = 0
x = 1: 1² + 2.1 = 1 + 2 =3
x = 2: 2² + 2.2 = 4 + 4 = 8
x = 3: 3² + 2.3 = 9 + 6 = 15
e) y = x²
x = - 1: (-1)² = 1
x = 0: 0² = 0
x = 1: 1² = 1
x = 2: 2² = 4
x = 3: 3³ = 9
f) y = x² + 2x + 1
x = - 1: (-1)² + 2.(-1) + 1 = 1 - 2 + 1 = 2 - 2 = 0
x = 0: 0² + 2.0 + 1 = 0 + 0 + 1 = 1
x = 1: 1² + 2.1 + 1 = 1 + 2 + 1 = 4
x = 2: 2² + 2.2 + 1 = 4 + 4 + 1 = 9
x = 3: 3² + 2.3 + 1 = 9 + 6 + 1 = 16
g) y = x² + 1
x = -1: y = (-1)² + 1 = 1 + 1 =2
x = 0: y = 0² + 1 = 0 + 1 = 1
x = 1: y = 1² + 1 = 1 + 1 = 2
x = 2: y = 2² + 1 = 4 + 1 = 5
x = 3: y = 3² + 1 = 9 + 1 = 10
Resposta:
a) y = x² - 2x + 1
x = - 1: (-1)² - 2.(-1) + 1 = 1 + 2 + 1 = 4
x = 0: 0² - 2.0 + 1 = 0 - 0 + 1 = 1
x = 1:1² - 2.1 + 1 = 1 - 2 + 1 = 2 - 2 = 0
x = 2: 2² -2.2 + 1 = 4 - 4 + 1 = 0 + 1 = 1
x = 3: 3² - 2.3 + 1 = 9 - 6 + 1 = 10 - 6 = 4
b) y = x² - x + 2
x = - 1: (-1)² - (-1) + 2 = 1 + 1 + 2 = 4
x = 0: 0² - 0 + 2 = 0 - 0 + 2 = 2
x = 1: 1² - 1 + 2 = 1 - 1 + 2 = 0 + 2 = 2
x = 2: 2² - 2 + 2 = 4 - 2 + 2 = 6 - 2 = 4
x = 3: 3² - 3 + 2 = 9 - 3 + 2 = 11 - 3 = 8
c) y = x² + 2x - 3
x = - 1: (-1)² + 2.(-1) - 3 = 1 - 2 - 3 = 1 - 5 = - 4
x = 0: 0² +2.0 - 3 = 0 + 0 - 3 = - 3
x= 1: 1² + 2.1 - 3 = 1 + 2 - 3 = 3 - 3 = 0
x = 2: 2² + 2.2 - 3 = 4 + 4 - 3 = 8 - 3 = 5
x = 3: 3² + 2.3 - 3 = 9 + 6 - 3 = 15 - 3 = 12
d) y = x² + 2x
x = - 1: (-1)² + 2(-1) = 1 - 2 = - 1
x = 0: 0² + 2.0 = 0 + 0 = 0
x = 1: 1² + 2.1 = 1 + 2 =3
x = 2: 2² + 2.2 = 4 + 4 = 8
x = 3: 3² + 2.3 = 9 + 6 = 15
e) y = x²
x = - 1: (-1)² = 1
x = 0: 0² = 0
x = 1: 1² = 1
x = 2: 2² = 4
x = 3: 3³ = 9
f) y = x² + 2x + 1
x = - 1: (-1)² + 2.(-1) + 1 = 1 - 2 + 1 = 2 - 2 = 0
x = 0: 0² + 2.0 + 1 = 0 + 0 + 1 = 1
x = 1: 1² + 2.1 + 1 = 1 + 2 + 1 = 4
x = 2: 2² + 2.2 + 1 = 4 + 4 + 1 = 9
x = 3: 3² + 2.3 + 1 = 9 + 6 + 1 = 16
g) y = x² + 1
x = -1: y = (-1)² + 1 = 1 + 1 =2
x = 0: y = 0² + 1 = 0 + 1 = 1
x = 1: y = 1² + 1 = 1 + 1 = 2
x = 2: y = 2² + 1 = 4 + 1 = 5
x = 3: y = 3² + 1 = 9 + 1 = 10
Explicação passo a passo: