pt đường tròn Flashcards by Mipan Unknown | Brainscape

Q

pt chính tắc cua dg tron

A

(x-a)^2+(y-b)^2=R

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Q

pt tổng quát dg tron

A

x^2+y^2-2ax-2by+c=0

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Q

c= ???

A

c=a^2+b^2-R

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Q

cho 2x + 2y… mún tính a,b thì pải ??

A

A/-2 , B/-2

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Q

dk xét pt dg tròn

A

a^2+b^2-c>0

zx^2+zy^2… (z=z)

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