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Unformatted text preview: June 2011 PURDUE UNIVERSITY Study Guide for the Credit Exam in Multivariate Calculus (MA 261) Students who pass this exam will receive 4 credit hours for MA 261 This study guide describes briefly the topics to be mastered prior to attempting to obtain credit by examination for MA 261. The material covered is the calculus of several variables, and it can be studied from many textbooks, almost all of them entitled CALCULUS or CALCULUS WITH ANALYTIC GEOMETRY. The textbook currently used at Purdue is CALCULUS Early Transcendentals, Stewart, Brooks/Cole. See also http://www.math.purdue.edu/academic/courses for recent course information and materials. The exam consists of 25 multiple choice questions, with two hour time limit. No books, notes, calculators or any other electronic devices are allowed. IMPORTANT: 1. Study all the material thoroughly. 2. Solve a large number of exercises. 3. When you feel prepared for the examination, solve the practice problems. 4. Come to the examination rested and confident. The subject matter of the calculus of several variables extends the students ability to analyze functions of one variable to functions of two or more variables. Graphs of functions of two variables or of equations involving three variables may be thought of as surfaces in three dimensions. Tan gents, normals, and tangent planes to these surfaces are part of the subject matter of the calculus of several variables. The concept of volume is defined for threedimensional solids. These new concepts require the introduction of partial derivatives and multiple integrals. Most of the problems to be solved require the repeated application of ideas and techniques from the calculus of one variable. Accordingly, a good grasp of the notions of di ff erentiation and integration for functions of one variable is a necessary prerequisite for the study of the calculus of several variables. Several of the concepts from plane analytic geometry are also generalized in the course, leading to a brief study of three dimensional analytic geometry, including such topics as planes and the quadric surfaces (whose cross sections are conics), and three dimensional coordinate systems, including rectangular, cylindrical and spherical coordinates, and the relationships among these. The topics to be studied prior to attempting the attached practice problems are listed below 1. Analytic Geometry of Three Dimensions Angle between two vectors, scalar product, cross product, planes, lines, surfaces, curves in 3 dimensional space. 2. Partial Di ff erentiation Functions of several variables, partial derivatives, di ff erential of a function of several variables, partial derivatives of higher order, chain rule, extreme value problems, directional derivatives, gradient, implicit functions....
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