Al resolver el problema se obtiene la ecuación de la circunferencia:
x² + y² - 4x - 2y + -20 = 0
Ver la imagen adjunta con la gráfica.
La ecuación general de la circunferencia:
x² + y² + Cx + Dy + E = 0
Evaluar cada punto en la ecuación;
(5, -3)
(5)² + (-3)² + C(5) + D(-3) + E = 0
25 + 9 + 5C - 3D + E = 0
5C - 3D + E = -34
Despejar E;
E = - 34 - 5C + 3D
(6, 4)
(6)² + (4)² + C(6) + D(4) + E = 0
36 + 16 + 6C + 4D + E = 0
6C + 4D + E = -52
Sustituir E;
6C + 4D - 34 - 5C +3D = -52
C + 7D = -18
Despejar C;
C = -18 - 7D
(-3, 1)
(-3)² + (1)² + C(-3) + D(1) + E = 0
9 + 1 - 3C + D + E = 0
- 3C + D + E = - 10
- 3C + D - 34 - 5C + 3D = - 10
-8C + 4D = 24
sustituir C;
-8(-18 - 7D) + 4D = 24
144 + 56D + 4D = 24
60D = 24 - 144
D = -120/60
D = -2
C = -18 - 7(-2)
C = -4
E = - 34 - 5(-4) + 3(-2)
E = -20
Sustituir;
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Al resolver el problema se obtiene la ecuación de la circunferencia:
x² + y² - 4x - 2y + -20 = 0
Ver la imagen adjunta con la gráfica.
La ecuación general de la circunferencia:
x² + y² + Cx + Dy + E = 0
Evaluar cada punto en la ecuación;
(5, -3)
(5)² + (-3)² + C(5) + D(-3) + E = 0
25 + 9 + 5C - 3D + E = 0
5C - 3D + E = -34
Despejar E;
E = - 34 - 5C + 3D
(6, 4)
(6)² + (4)² + C(6) + D(4) + E = 0
36 + 16 + 6C + 4D + E = 0
6C + 4D + E = -52
Sustituir E;
6C + 4D - 34 - 5C +3D = -52
C + 7D = -18
Despejar C;
C = -18 - 7D
(-3, 1)
(-3)² + (1)² + C(-3) + D(1) + E = 0
9 + 1 - 3C + D + E = 0
- 3C + D + E = - 10
Sustituir E;
- 3C + D - 34 - 5C + 3D = - 10
-8C + 4D = 24
sustituir C;
-8(-18 - 7D) + 4D = 24
144 + 56D + 4D = 24
60D = 24 - 144
D = -120/60
D = -2
C = -18 - 7(-2)
C = -4
E = - 34 - 5(-4) + 3(-2)
E = -20
Sustituir;
x² + y² - 4x - 2y + -20 = 0