12.2 Spheres

What is a sphere in 3d space

• Much like its 2d counterpart it has all cthe vwariable distances the same distance from the centre

Standard Formm of a sphere

• this is how you find general shit about the sphere, and you must use this!

  • where the centre of the sphere is at C(l,p,g)

  • $(x-l{)}^2+(y-p{)}^2+(z+g{)}^2=r^2$

How to convert a general equation into standard form

• We must use completing squares lol