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<title>
Day 03 Fri
</title>
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<h2>Day 3 topics</h2>
<p class="show">Sections 9.5,6</h2>

<ul>
<li>Three ways to describe a line:
  <ul><li>Vector (parametric) equations (point and direction),
  <li>Symmetric equations, 
  <li>Two point vector equation (starting with two points on the line)
  </ul>
<li>Three ways to describe a plane:
  <ul><li>Vector equation (point and a normal vector),
  <li>Scalar equation,
  <li>Parametric equations (point and two direction vectors).
  </ul>
<li>A function of two variables: rule, definition and shape of domain.
<li>Graphs of functions of two variables as surfaces in $R^3$ and horizontal traces.
<li>Quadric surfaces: graphs of second-degree polynomials in x, y, and z.
</ul>

<h4 class="show"><a href="../handouts/Class03/">Class 03 Resources</a></h4>
<ul>
<li>Lines in 3-d space.
<li>Planes in 3-d space.
<li>Planes from points.
<li>Staying cool.
<li>[Group] Matching general functions.
<li>[Group] Matching quadric surfaces.
</ul>

<h4 class="show" id="tomorrow">To do for Monday</h4>
<ul>
<li>Read sections 9.7, 10.1,2
<li>Answer the reading questions for Class 04
<li>Complete all Class 03 worksheets
<li>WebAssign HW 3
<li><i>Mathematica</i> Surfaces worksheet
</ul>

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