f(x) = -(x-2)(x+4)
----------
postać ogólna:
f(x)=-(x²+4x-2x-8) = -x²-4x+2x+8 = -x²-2x+8
----
postać kanoniczna:
delta:
-x²-2x+8
a=-1 b=-2 c=8
Δ=(-2)²-4*(-1)*8= 4+32 = 36
Wzory na p,q
====
p=-b/2a
p=2/-2= -1
q=-Δ/4a
q=-36/-4 = 9
f(x)=(x-p)²+q
f(x)=(x+1)²+9 - postać kanoniczna
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f(x) = -(x-2)(x+4)
----------
postać ogólna:
f(x)=-(x²+4x-2x-8) = -x²-4x+2x+8 = -x²-2x+8
----
postać kanoniczna:
delta:
-x²-2x+8
a=-1 b=-2 c=8
Δ=(-2)²-4*(-1)*8= 4+32 = 36
Wzory na p,q
====
p=-b/2a
p=2/-2= -1
q=-Δ/4a
q=-36/-4 = 9
f(x)=(x-p)²+q
f(x)=(x+1)²+9 - postać kanoniczna