January 26 lecture <br>

The graph of f(x,y)=x<sup>1/4</sup>y<sup>1/3</sup><br>
<a href="partials.jpg">First view</a> and
<a href="partials2.jpg">Second view</a>  <P>

<a href="SolutionsExam1.pdf">Solutions to Midterm 1</a>