- #1

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## Homework Statement

Identify the following surfaces:

i)

**r.u**=L

ii)

**r.u**=ml

**r**l for -1[itex]\leq[/itex]m[itex]\leq[/itex]1

where k, L, m are fixed scalars and u is a fixed unit vector.

## Homework Equations

## The Attempt at a Solution

The first one is in the same form as the equation of a plane, but u is not necessarily the normal, so I'm confused. For the second one, I have no idea.