
Ellipse, showing x and y axes, semimajor axis a, and semiminor axis b.
The sum of the distances for any
Polar Equation: Origin at Center (0,0) Polar Equation: Origin at Focus (f1,0)
When solving for FocusDirectrix values with this calculator, the major axis, foci and k must be located on the xaxis.
Integration along xaxis, Vertical elements
Centroidal axes for all section and sector calculations are measured with respect to the xaxis.
Integration along yaxis, Horizontal elements
Negative values in the Second Quadrant are actually permissible, but must be interpreted with care. The shape created about the yaxis will be asymmetrical if the entries for x and x are not of equal magnitude.
Sections bounded by chord x1 to x2
Ellipse Sectors
