Sprowadź następujące trójmiary do posataci kanonicznej : a) ½ x²+ ⅔x -1 b) 6x² -192x +1242
y=a(x-p)² + q --- postać kanoniczna
a)
Δ=b²-4ac=4/9 - 4*1/2*(-1)=4/9 + 2 = 22/9
p=-b/2a = -2/3 : (2*1/2) = -2/3 : 1 = -2/3
q=-Δ/4a = -22/9 : (4*1/2) = -22/9 * 1/2 = -11/9
y=1/2(x+2/3)² - 11/9
b)
p= 192/12 = 16
q=f(p) =f(16) = 6*16² -192*16 + 1242 = 1536 - 3072+1242 = -294
y=6(x-16)² - 294
a) ½ x²+ ⅔x -1=y
a=1/2 b=2/3 c=-1
Δ=b ²-4ac
Δ=(2/3) ²-4*1/2*(-1)
Δ=4/9+2
Δ=4/9+18/9
Δ= 22/9
p=-b/2a
p=(-2/3)/2*(1/2)
p=-2/3*1
p=-2/3
q=- Δ/4a
q= -22/9/4*(1/2)
q=-11/9
y=a(x-p)2+q
y=1/2(x+2/3)2- 11/9
b)6x² -192x +1242=y
a=6 b=-192 c=1242
Δ=(-192)2-4*6*1242
Δ=36864- 29808
Δ=7056
p=-(-192)/2*6
p=192/12
p=16
q=-7056/24
q=-294
y=6(x-16)2-294
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y=a(x-p)² + q --- postać kanoniczna
a)
Δ=b²-4ac=4/9 - 4*1/2*(-1)=4/9 + 2 = 22/9
p=-b/2a = -2/3 : (2*1/2) = -2/3 : 1 = -2/3
q=-Δ/4a = -22/9 : (4*1/2) = -22/9 * 1/2 = -11/9
y=1/2(x+2/3)² - 11/9
b)
p= 192/12 = 16
q=f(p) =f(16) = 6*16² -192*16 + 1242 = 1536 - 3072+1242 = -294
y=6(x-16)² - 294
a) ½ x²+ ⅔x -1=y
a=1/2 b=2/3 c=-1
Δ=b ²-4ac
Δ=(2/3) ²-4*1/2*(-1)
Δ=4/9+2
Δ=4/9+18/9
Δ= 22/9
p=-b/2a
p=(-2/3)/2*(1/2)
p=-2/3*1
p=-2/3
q=- Δ/4a
q= -22/9/4*(1/2)
q=-11/9
y=a(x-p)2+q
y=1/2(x+2/3)2- 11/9
b)6x² -192x +1242=y
a=6 b=-192 c=1242
Δ=(-192)2-4*6*1242
Δ=36864- 29808
Δ=7056
p=-(-192)/2*6
p=192/12
p=16
q=-7056/24
q=-294
y=6(x-16)2-294