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 ( 47+ )
Otras preguntas
How people make a living through gameling?
A person is 185 cm tall and casts a shadow 145 cm long. A nearby tree casts a shadow which is 212 cm long. Find the height of the tree in cm.
a movie is 1 7/8 hours long. After 45 minutes, how much of the movie is left?
Twenty-five percent of all household burglaries can be attributed to unlocked doors or windows. Crime is the result of opportunity plus desire. To prevent crime
If a historian wanted to study data-based trends of a culture's relationship to Earth's physical features, which kind of expert should she consult?
Unlike the methods of early scientists, how did Sir Francis Bacon believe basic laws of science should be determined?
Fill in the blank with the correct indirect object pronoun. Ella ______ da los libros a los chicos. me te le les
A bee flies 20 feet per second directly to a flowerbed from its hive. The bee stays at the flowerbed for fifteen minutes. Then it flies directly back to the hiv
The anticancer drug paclitaxel, derived from the pacific yew has many effects on mitosis. one of its most powerful effects is that it prevents disassembly of th
How did radical republicans in congress work against president johnson's reconstruction plans? a.they voted to override his vetoes of their civil rights bills.
