Complex Analysis MATH 305
Final Exam
Tuesday, May 17, 11:30  2:00 pm, Smith Labs 155
The Final Exam is cumulative, covering all the material we have discussed in Chapters 1  7 of the course text.
This is everything except for Sections 27, 28, 35, 36, 42, 47, 54, 58, 61, 67, 71, 75, 77, 80 and onwards.
You should go over all homework assignments (including the partial solutions for HW #2, 4, and 6),
the two computer labs, the midterm exams and quizzes, the inclass worksheets, and your class notes.
Approximately 2530% of the exam will cover material taught since the second midterm exam.
We will review for the exam on Sunday, May 15, 6:30  8:00 pm in Smith Labs 155.
Please come prepared with specific questions. Some sample final exam questions
are available here (PDF file).
Solutions to these problems are available
here
and
here.
Note: You will be allowed one "cheat sheet" 8.5 x 11 piece of paper,
front and back, full of whatever formulas, theorems, etc. you wish.
Also, no calculators are allowed on the exam so
be prepared to answer questions without your personal calculator.
The following topics, definitions and theorems are important material
for the exam. You may be asked to define some terms precisely as well
as state and/or prove important facts and theorems. Keep in mind that many of the problems
in the text provide answers or hints, either as part of the
question or listed after the problem. You will not have such an advantage on the
exam.
 Complex Numbers: complex plane, addition, multiplication, basic algebraic properties,
multiplicative and additive inverses, conjugate
 Vectors and Moduli: addition and subtraction of complex numbers vectorially, modulus of a
complex number, equation of a circle using the modulus, triangle inequalities, properties of the modulus
(e.g., the modulus of a product equals the product of the moduli)
 Complex Conjugate: properties of, connection with modulus
 Exponential Form: polar coordinates, Euler's formula, argument versus Argument, products and powers
in exponential form, de Moivre's formula, arguments of products and quotients
 Roots of Complex Numbers: how to find the nth roots of a complex number, geometric description of
the location of the roots, roots of unity
 Functions: writing functions in terms of real and imaginary parts, mappings from the zplane to the wplane,
mapping the exponential function
 Limits: epsilondelta definition, approaching from different directions, CR limit theorem, Big limit theorem (BLT),
limits involving infinity, the Riemann sphere, LIPI theorem, definition of a continuous function
 Derivatives and Analytic Functions: definition of the derivative, basic differentiation formulas, CauchyRiemann
equations (in both rectangular and polar coordinates), SCD theorem, definition of an analytic function, entire
functions, singular points, finding where a function is analytic (if at all)
 Harmonic Functions: Laplace's equation, definition of a harmonic function, the harmonic conjugate,
finding harmonic conjugates
 Important Functions: exponential e^z, logarithm log z, complex exponents z^c, cos z and sin z,
know their definitions, properties and derivatives
 Logarithms : log z versus Log z, branches and branch cuts of log z,
the principal branch of log z, properties of log z
 Contour Integrals: Setup and evaluation of contour integrals, parametrizations of lines and circles,
properties of contour integrals, upper bounds for the moduli of contour integrals (the ``ML Theorem'')
 Important Integration Theorems and Formulas:
AD theorem (antiderivative = path independence, etc.), CauchyGoursat theorem, simply versus multiply
connected domains, Principle of deformation of paths (PDP),
Cauchy integral formula, extension of the Cauchy integral formula
 Applications of Cauchy's Integral Formulas: Analytic functions have analytic derivatives of all orders,
Liouville's theorem, the Fundamental Theorem of Algebra

Series: Convergence of, geometric series, Taylor series (how to compute them, know standard examples like e^z),
Taylor's theorem, Maclaurin series, Laurent series (how to compute them via substitution, partial fractions or
using geometric series), Laurent's theorem, basic facts about power series (e.g., converges to an analytic function
inside the circle of convergence), term by term differentiation and integration

Residues, Poles, and Singular Points: isolated singular points, removable singularities, poles, essential singularities,
Picard's theorem, residues (how to compute them using Laurent series, special formula for poles),
Cauchy's residue theorem, evaluating improper integrals using residues