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Math Help - mapping a sphere

  1. #1
    Bad Apple
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    mapping a sphere

    how can a map a sphere on a 3D graph?
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  2. #2
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    Quote Originally Posted by Bad Apple
    how can a map a sphere on a 3D graph?
    You mean to ask what is its equation?
    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,
    x^2+y^2+z^2=r^2 where r is its radius.
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