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x2 + 4y2 – 4x - 8y – 92 = 0
(x - 2)^2 + 4(y - 1)^2 - 100 = 0
a. Centro (2, 1)
b. Focos (-6.7, 1). (10.7, 1)
c. Vértices (-8, 1), (12, 1)
http://www.wolframalpha.com/input/?i=x2+%2B+4y2+%E...
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Suerte
Hola
x^2 - 4 x + 4 y^2 - 8 y = 92
x^2 - 4 x + 4 (y^2 - 2 y) = 92
x^2 - 4 x + 4 + 4 (y^2 - 2 y + 1) = 92 + 4 + 4*1
(x - 2)^2 + 4 (y - 1)^2 = 100
(x - 2)^2/100 + (y - 1)^2/25 = 1
************************************
Centro
(2 , 1)
Semieje mayor
a = 10
Semieje menor
b = 5
Semieje focal
c = √(a^2 - b^2) = √(100 - 25) = √75 = 5√3
Focos
(2 + 5√3 , 1)
(2 - 5√3 , 1)
Vértices
(2 + 10 , 1) = (12 , 1)
(2 - 10 , 1) = (-8 , 1)
(2 , 1 + 5) = (2 , 6)
(2 , 1 - 5) = (2 , -4)
Verificado con Graphmatica
¿me ayudan? :D
De la siguiente elipse: x2 + 4y2 – 4x - 8y – 92 = 0. Determine:
a. Centro
b. Focos
c. Vértices
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Answers & Comments
...
x2 + 4y2 – 4x - 8y – 92 = 0
(x - 2)^2 + 4(y - 1)^2 - 100 = 0
a. Centro (2, 1)
b. Focos (-6.7, 1). (10.7, 1)
c. Vértices (-8, 1), (12, 1)
http://www.wolframalpha.com/input/?i=x2+%2B+4y2+%E...
click en propiedades
Suerte
Hola
x^2 - 4 x + 4 y^2 - 8 y = 92
x^2 - 4 x + 4 (y^2 - 2 y) = 92
x^2 - 4 x + 4 + 4 (y^2 - 2 y + 1) = 92 + 4 + 4*1
(x - 2)^2 + 4 (y - 1)^2 = 100
(x - 2)^2/100 + (y - 1)^2/25 = 1
************************************
Centro
(2 , 1)
Semieje mayor
a = 10
Semieje menor
b = 5
Semieje focal
c = √(a^2 - b^2) = √(100 - 25) = √75 = 5√3
Focos
(2 + 5√3 , 1)
(2 - 5√3 , 1)
Vértices
(2 + 10 , 1) = (12 , 1)
(2 - 10 , 1) = (-8 , 1)
(2 , 1 + 5) = (2 , 6)
(2 , 1 - 5) = (2 , -4)
Verificado con Graphmatica
¿me ayudan? :D
De la siguiente elipse: x2 + 4y2 – 4x - 8y – 92 = 0. Determine:
a. Centro
b. Focos
c. Vértices