Question

What is Ellipsoid?

Answer

Ellipsoid is a quadric whose equation in a suitable coordinate system is $\frac{x^2}{a^2}+\frac{y^2}{b^2}+\frac{z^2}{c^2}=1$ Centred at c(h, k, l) and semi-axis a, b, c. $\frac{{\left(x-h\right)}^2}{a^2}+\frac{{\left(y-k\right)}^2}{b^2}+\frac{{\left(z-1\right)}^2}{c^2}=1$