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<title>
Day 06 Wed
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<h2>Day 6 topics</h2>
<p class="show">Section 11.1
<ul>
   <li>A function of two or three variables is a rule assigning a real number to every point in its domain.
  <li>Functions of two variables can be represented as surfaces, and can be described in two dimensions by contour maps and horizontal traces.
  <li>Functions of three variables can be described by level surfaces, and are generally more difficult to visualize than functions of two variables.
</ul>

<h4 class="show"><a href="../handouts/Class06/">Class 6 Resources</a></h4>



<h4 class="show" id="tomorrow">To do for Thursday</h4>
<ul>
  <li>Read sections 11.2-11.4
  <li>Answer the reading questions for Class 07
  <li>Contour mapping with laser level (OK, not due till Friday) - photo from above of your marked-up object.
  <li>Complete all Class 6 worksheets
  <li>WebAssign HW 6
</ul>





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