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Homework Math 2401 Spring 2009



1. Find all the 1st and second order partail derivatives for
a) x y /(x^2 + y^2)
b) Sin(x^2 y z^3)
2. Draw a contour plot of x^2 - y , for x and y between -1 and +1
3.Section 15.3: 15,17,21;
4. Section 15.4: 11,13,46;
5. Section 15.6: 13,15, 26



At which point we go pback to max min problems...double integrals, etc


HW6: Due Thursday 16.7: 14,15,35.37,44; 16.6:9,10,27,29

HW7: Due Thursday 12: 17.3: 15,17,29,31,35,37,39,45 ;
17.4: 5,6,13,15,23,25


HW8: Due Th April 7: Section: 18.5: 1,3,11,13,23, 35 ; Section 18.6: 1.3.7.9; Section 18.7: 1,3,9,,25,27


HW (: Not collected: Sectio 18.7: 1,3,11,13,21,23; Section 18.8: 1,3,5; Section 18.9: 1.3.5.11.13 This will be on quiz. April 16th

Last HW collected Tuesday dead week - April 21: Section 18.10, page 1006L::> 1,3,5,11

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