(Math 253)Homework 3(Due 3/4)

12.3: 24,26,27,29(only compute the direction cosines, not the angles),32,34,36,37,40,45

12.4: 1,3,7,10,13,17,18,19,20,27

12.5: 2~5

Remind you: Extra credit problems in section 10.4 is due 2/26! You are super welcome to come and discuss them with me, review Riemann sum, write all the problems as the limit of Riemann sums first!

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