MATH 21A Midterm: MATH 21A Harvard 21a Spring 0921aS09 Exam2 review sol
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7/22/2010 second hourly practice i maths 21a, o. knill, summer 2010. Name: start by printing your name in the above box, try to answer each question on the same page as the question is asked. If needed, use the back or the next empty page for work. If you need additional paper, write your name on it: do not detach pages from this exam packet or unstaple the packet, provide details to all computations except for problems 1-3, please write neatly. Answers which are illegible for the grader can not be given credit: no notes, books, calculators, computers, or other electronic aids can be allowed, you have 90 minutes time to complete your work. Problem 1) true/false questions (20 points), no justi cations needed. Mark for each of the 20 questions the correct letter. Every critical point of a smooth function f (x, y) of 2 variables is either a maximum or a minimum.
