If that bothers you, then it's easy to arrange it so that they don't.
The standard equation for the circle centered at (A, B) is
(x - A)2 + (y - B)2 = R2
OK. So if the circle is centered at the origin, then 'A' and 'B' are zero.
(x - 0)2 + (y - 0)2 = R2
That has just as many terms as any other circle, but most people
simply don't bother writing all the zeros for this one. That's all
there is to the mystery.
The equation is based on having a centre at the origin. Moving the centre means you have to define where it is in relation to the origin, hence the extra terms involved in that job.
Circles, ellipses, ovals, cycloids, cardoids are some.Circles, ellipses, ovals, cycloids, cardoids are some.Circles, ellipses, ovals, cycloids, cardoids are some.Circles, ellipses, ovals, cycloids, cardoids are some.
false TPate
There are many different standard forms: standard forms of numbers, of linear equations, of circles, etc. The standard form of numbers simplifies working with very large and very small numbers.
Triangles, spheres, pentagons, cylinders, circles, ellipses, the Mandelbrot Set, etc.
Ellipses are not circles.
The equation is based on having a centre at the origin. Moving the centre means you have to define where it is in relation to the origin, hence the extra terms involved in that job.
Circles, ellipses, ovals, cycloids, cardoids are some.Circles, ellipses, ovals, cycloids, cardoids are some.Circles, ellipses, ovals, cycloids, cardoids are some.Circles, ellipses, ovals, cycloids, cardoids are some.
Yes; the circle is a special case of an ellipse.
Kepler did not discover ellipses. In 1605 he discovered that the orbits of the planets were ellipses rather than perfect circles.
By using Cartesian equations for circles on the Cartesian plane
false TPate
Ellipses (and, in the special case circles).
draw 2 circles the same size
There are many different standard forms: standard forms of numbers, of linear equations, of circles, etc. The standard form of numbers simplifies working with very large and very small numbers.
Johannes Kepler
Johannes Kepler replaced circles with ellipses in the heliocentric model of the universe.