How to convert Parametric equation to Cartesian form
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Calculate normal vector to this plane :
N = s x t
(vector product of two vectors belonging to plane)
Now you have coefficients a, b, c:
N = (a, b, c)
then substitute base point (in general - any point in the plane)
(1, 2, -1) to equation ax+yb+cz+d=0
a+2b-c+d=0
and find d
Comments
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DMEM over 4 years
I need to convert a plane's equation from Parametric form to Cartesian form. For example:
(1, 2, -1) + s(1, -2, 3) + t(1, 2, 3)
to:
ax+yb+cz+d=0
So basically, my question is: how do I find the a, b, c and d, and what's the logic behind the conversion.
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Thomas Wagenaar almost 7 yearsWhat is the intuition behind the coefficients of the Cartesian form being equal to the numbers of the normal vector?
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Caridorc over 6 years@ThomasW the only useful vector in determining the orientation of a plane is the vector ortogonal to it (if you use vectors parallel to it, you need 2)