hi nobel, I am having bother understanding the equation of a circle(Original post by Noble.)
Ok, I will tell you the answer - not that it's going to help you.
For the circle to 'touch' each axis we must have that the centre point of the circle is of the form where
Since we also have that lies on the line we must have but we also know that , so gives the centre of the circle being now the radius is also obvious.
x^2 + y^2 + 2gx + 2fy + c = 0
what are f g and c?
Why do people do it?