- #1
Physicsissuef
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Homework Statement
[tex]\vec{PM_1}=d*\vec{n_0}[/tex]
Here are the both pictures.
"[URL [Broken] 0401.jpg"]Picture 1.[/URL]
"[URL [Broken] 0502.jpg"]
Picture 2[/URL]
Homework Equations
[tex]d = \frac{\left | a x_1 + b y_1 + c z_1+d \right |}{\sqrt{a^2+b^2+c^2}}.[/tex]
The Attempt at a Solution
Why in my book says that, if d > 0 then the coordinate M is of opposite site of the plane (relative to the (0,0,0)), and if it is d < 0 it is on same site of the plane (relative to (0,0,0)) when d is always positive?
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