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MAT 228 - Complex Analysis

Faculty of Engineering and Natural Sciences · Electrical & Electronics Engineering (English 30%) · Undergraduate

ECTS: 5 T+P+L: 3+0+0 Compulsory
Coordinator: Doç. Dr. Sinem GÜLER
Prerequisites: MAT 215 - Mathematics-III

Course Objective

The main aim of this course is to learn: Complex Numbers and Complex Plane, Complex Functions and Mappings, Analytic and Harmonic Functions, Cauchy-Riemann Equations, Elementary Functions: Complex Exponential, Logarithmic, Trigonometric and Inverse Trigonometric Functions, Integration in the Complex Plane, Counter Integral, Cauchy Theorem, Homotopy and Simple Connected Regions, Cauchy-Goursat Theorem, Cauchy Integral Formulas and Their Conseqeuences, Complex Sequences and Series, Taylor Series of Analytic Functions, Laurent Series, Singular and Isolated Singular Points, Zeros and Poles, Residue and Residue Theorem

Course Content

 Complex Numbers and Complex Plane, Complex Functions and Mappings, Analytic and Harmonic Functions, Cauchy-Riemann Equations, Elementary Functions: Complex Exponential, Logarithmic, Trigonometric and Inverse Trigonometric Functions, Integration in the Complex Plane, Counter Integral, Cauchy Theorem, Homotopy and Simple Connected Regions, Cauchy-Goursat Theorem, Cauchy Integral Formulas and Their Conseqeuences, Complex Sequences and Series, Taylor Series of Analytic Functions, Laurent Series, Singular and Isolated Singular Points, Zeros and Poles, Residue and Residue Theorem

Course Learning Outcomes

  1. 1. Work with complex numbers
  2. 2. Be familiar with complex plane and complex functions.
  3. 3.Study on differentiability and analyticity of complex functions
  4. 4. Understand a necessary conditions analyticity: Cauchy-Riemann equations
  5. 5.Understand the similarities and differences between the real and complex elementary functions
  6. 6.. Set up and directly evaluate contour integrals and complex integrals
  7. 7.Evaluate contour integrals using the Cauchy Integral Theorem.
  8. 8.Understand the complex sequences and series
  9. 9.Find Taylor or Laurent series for simple functions and show understanding of the convergence regions for each type of series.
  10. 10.Identify and classify zeros and singular points of functions, compute residues and use residues to evaluate various contour integrals.
  11. 11. Evaluate improper integrals and definite integrals involving sines and cosines

Core Area Distribution

(46) Mathematics and Statistics%60 (52) Engineering and Engineering Trades%40

Teaching Methods

ExpressionQuestion-AnswerExercise and PracticeGuided PracticeSelf studyProblem Solving

Assessment & Evaluation

HomeworkPortfolioTesting (Essay / Tests: True-Falls, multiple-choice, short answer, matching)

ECTS / Workload

ActivityQuantityDuration (h)Total Workload
Course Duration (Including Exam Week)16348
Out of Class Study Period16348
Midterm122
Quiz10110
Assignment3515
Practice000
Final122

Course Schedule

WeekSubjectPreparation
1• Complex Numbers and Their Properties • Polar Representation for Complex Numbers • de Moivre’s formulaChartesian plane
2Complex Powers and Roots • Sets of Points in the Complex Plane • ApplicationsPolar Coordintes
3• Complex Functions • Complex Functions as MappingsFunctions and Their Graphs
4• Limits and Continuity of Complex Functions • Analytic FunctionsLimits and Continuity
5• Cauchy-Riemann Equations • Harmonic FunctionsDifferentiation of Real Functions
6• Elementary Functions: I. Complex Exponential II. Complex Trigonometric III. Complex Logarithmic Functions IV. Complex Inverse Trigonometric FunctionsElementary Functions and Their Properties
7• Complex Integral • Countour Integral • Cauchy-Goursat TheoremLine Integral
8
9• Cauchy’s Integral Formulas and Their ConsequencesLine integral
10• Cauchy’s Integral Formula’s RecitationComplex Integral • Countour Integral • Cauchy-Goursat Theorem
11• Complex Sequences and Series • Series and Convergence Theorems with Complex VariablesReal Sequences, Series and Their Convergence Theorems
12• Complex Power Series • Integration and Differentiation of Power SeriesSeries and Convergence Theorems with Complex Variables
13• Taylor Series of Analytic Functions • Laurent SeriesTaylor and Maclaurin Series
14• Zeros and Poles • Residues • Cauchy’s Residue TheoremTaylor Series of Analytic Functions • Laurent Series
15Review for Final ExamReview for Final Exam