ejayGrape
ejayGrape
13-01-2017
Mathematics
contestada
The equation x^2+y2-4x+2y=b describe a circle
Respuesta :
LammettHash
LammettHash
13-01-2017
[tex]x^2+y^2-4x+2y=b\implies~x^2-4x+4+y^2+2y+1=b+5\implies~(x-2)^2+(y+1)^2=b+5[/tex]
This describes a circle centered at [tex](2,-1)[/tex] with radius [tex]\sqrt{b+5}[/tex].
Answer Link
VER TODAS LAS RESPUESTAS ( 54+ )
Otras preguntas
How did the rise of mass consumption impact life for American women—especially middle-class urban women?
What did Jan ingenhousz show?
Suppose an astronaut drops a feather from a height of 1.2 meters above the surface of the moon. If the free fall acceleration on the moon is 1.62 m/s² downward,
Walker is taking a strength-training class. He hopes to increase the number of pounds that he can lift by 25% in 6 weeks. If x represents the number of pounds W
if a movie theater has 500 chairs and 3/4 have people sitting in them how many seats are filled
What is 42/24 as a mixed number in lowest terms?
If a tower casts a shadow 11 feet long the distance from the top of the tower to the end of the shadow is 61 feet .. How many feet tall is the tower
how did the two sides in the American revolution differ?
What is the greatest common factor of 60,90, and 120
a sentence with postindustrial
