how can a map a sphere on a 3D graph?

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- Mar 29th 2006, 05:07 PMBad Applemapping a sphere
how can a map a sphere on a 3D graph?

- Mar 29th 2006, 06:18 PMThePerfectHackerQuote:

Originally Posted by**Bad Apple**

In xy co-ordinate system there is the x-co-ordinate and the y-co-ordinate. Thus, there are two dimensions. When mapping a sphere you need a third dimension. When studing Multivaraible Calculus you will be introduced to 3 dimensional graphs and vectors. The third variable introduced is z. The equation of a sphere is then,

$\displaystyle x^2+y^2+z^2=r^2$ where $\displaystyle r$ is its radius.