15 sty 20:51
lisek:
a) (x + 2)2 + (y - 3)2 = 7
O = (-2 , 3) r = √7
b) (x + 1)2 + (y + 5)2 = 36
O = (-1 , -5) r = √6
c) (x + 1/2)2 + (y - 1)2 = 1
O = (-1/2 , 1) r = 1
15 sty 21:08
Tau:
1/
x2 +4x + 4 - 4 +y2 - 6y +9 - 9 +6=0
( x +2)2 + (y -3)2 = 4 +9 - 6
(x+2)2 + (y-3)2 = 1 r=1 S( - 2 , 3)
2/ podobnie spróbuj sama!
3/
x2 +x +1/4 - 1/4 + y2 - 2y +1 - 1 +1/4 =0
( x +1/2)2 + (y - 1)2 = 1 to S( - 1/2, 1) r= 1
15 sty 21:08
Tau: Sory! Tak mam błąd
w 1/ (x +2)2 + (y -3)2 = 7 r=√7 S( -2, 3)
15 sty 21:11
