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Physicsissuef
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Homework Statement
Find the normal vector equation (the equation with red in the picture below) of the plane which is normal on the vector n=(2,-2,1), and it is on distance 5 from O (i.e p=5)
Homework Equations
On this image are all the relevant equations.
http://img232.imageshack.us/img232/6030/28762075sm2.jpg
The Attempt at a Solution
I should find [tex]n_o[/tex], and then substitute in the equation.
[tex]n_o=\frac{n}{|n|}[/tex]
So n=2i-2j+k, |n|=3, p=5
[tex]n_o=\frac{2i-2j+k}{3}[/tex]
So the equation:
[tex]r * (\frac{2i-2j+k}{3}) - 5 =0 [/tex]
The problem is that in my book they don't divide it by 3? Why ? Is my way correct?
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