1- função y2 -4x-5
x=-2-1,0,1,2,3,4,5,6
2- função y=-x2+4x-3
x-2,-1,0,1,2,3,4,5,6
4- funçãoy=-x2+6x
x=01,2,3,4,5,6
mayra140802:
a primeira ta certa y2
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1-f(x)= x²-4x-5
a)f(-2)= (-2)²-4.(-2)-5
f(-2)= 4+8-5
f(-2)= 12-5=7
b)f(-1)= (-1)²-4.(-1)-5
f(-1)=1+4-5
f(-1)=5-5=0
c)f(0)= 0²-4.0-5
f(0)=-5
d) f(1)= 1²-4.1-5
f(1)=1-1-5=-7
e)f(2)= 2²-4.2-5
f(2)=4-8-5=-4-5=-9
f)f(3)= 3²-4.3-5
f(3)= 9-12-5=-3-5=-8
g)f(4)= 4²-4.4-5
f(4)= 16-16-5=0-5=-5
h)f(5)=5²-4.5-5
f(5)= 25-20-5=5-5=0
i)f(6)=6²-4.6-5
f(6)= 36-24-5=12-5=7
2-f(x)=-x²+4x-3
a)f(-2)= -(2)²+4.(-2)-3
f(-2)= -4-8-3=-15
b)f(-1)= -(-1)²+4.(-1)-3
f(-1)= -1-4-3=-8
c)f(0)= -0²+4.0-3
f(0)=-3
d)f(1)= -(1)²+4.1-3
f(1)= -1+4-3=3-3=0
e)f(2)=-(2)²+4.2-3
f(2)=-4+8-3=4-3=1
f)f(3)=-(3)²+4.3-3
f(3)=-9+12-3=3-3=0
g)f(4)=-(4)²+4.4-3
f(4)= -16+16-3=-3
h) f(5)=-(5)²+4.5-3
f(5)= -25+20-3=-5-3=-8
i) f(6)= -(6)²+4.6-3
f(6)= -36+24-3= -12-3=-15
4-f(x)=-x²+6x
a)f(0)=-(0)²+6.0
f(0)=0
b)f(1)= (-1)²+6.1
f(1)=1+6=5
c) f(2)=-(2)²+6.2
f(2)= -4+12=8
d)f(3)= -(3)²+6.3
f(3)= -9+18=9
e)f(4)=-(4)²+6.4
f(4)=-16+24=8
f)f(5)= -(5)²+6.5
f(5)=-25+30=5
g)f(6)=-(6)²+6.6
f(6)=-36+36=0
a)f(-2)= (-2)²-4.(-2)-5
f(-2)= 4+8-5
f(-2)= 12-5=7
b)f(-1)= (-1)²-4.(-1)-5
f(-1)=1+4-5
f(-1)=5-5=0
c)f(0)= 0²-4.0-5
f(0)=-5
d) f(1)= 1²-4.1-5
f(1)=1-1-5=-7
e)f(2)= 2²-4.2-5
f(2)=4-8-5=-4-5=-9
f)f(3)= 3²-4.3-5
f(3)= 9-12-5=-3-5=-8
g)f(4)= 4²-4.4-5
f(4)= 16-16-5=0-5=-5
h)f(5)=5²-4.5-5
f(5)= 25-20-5=5-5=0
i)f(6)=6²-4.6-5
f(6)= 36-24-5=12-5=7
2-f(x)=-x²+4x-3
a)f(-2)= -(2)²+4.(-2)-3
f(-2)= -4-8-3=-15
b)f(-1)= -(-1)²+4.(-1)-3
f(-1)= -1-4-3=-8
c)f(0)= -0²+4.0-3
f(0)=-3
d)f(1)= -(1)²+4.1-3
f(1)= -1+4-3=3-3=0
e)f(2)=-(2)²+4.2-3
f(2)=-4+8-3=4-3=1
f)f(3)=-(3)²+4.3-3
f(3)=-9+12-3=3-3=0
g)f(4)=-(4)²+4.4-3
f(4)= -16+16-3=-3
h) f(5)=-(5)²+4.5-3
f(5)= -25+20-3=-5-3=-8
i) f(6)= -(6)²+4.6-3
f(6)= -36+24-3= -12-3=-15
4-f(x)=-x²+6x
a)f(0)=-(0)²+6.0
f(0)=0
b)f(1)= (-1)²+6.1
f(1)=1+6=5
c) f(2)=-(2)²+6.2
f(2)= -4+12=8
d)f(3)= -(3)²+6.3
f(3)= -9+18=9
e)f(4)=-(4)²+6.4
f(4)=-16+24=8
f)f(5)= -(5)²+6.5
f(5)=-25+30=5
g)f(6)=-(6)²+6.6
f(6)=-36+36=0
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