Math 335, Accelerated (Honors) Advanced Calculus, Winter, 2012

This is the Math 335 homepage. Consult it from time to time to find useful information for the course. I will include links to the syllabus and other course information.

Anonymous form for feededback. The following are links to current course information.

(3/4/12) Sample problems for the final exam.
(2/12/12) Sample problems for the midterm.
(2/2/12) A hint for problem 14 in section 6.4. Prove that for small \(x\) \[ \frac{1}{x} \log(1+x) = 1 - \frac{x}{2} + \frac{x^2}{3} + \dots, \] and hence that \[ (1+x)^{\frac{1}{x}} = e(1-\frac{x}{2} +\frac{7}{12}x^2 +\dots). \] Hence prove that \[ \frac{e-(1+\frac{1}{n})^n}{1/n} \to \frac{e}{2} \text{ as } n\to \infty. \]
(1/26/12) Padelford C36 is reserved Saturday and Sunday from 11-2 for midterm review.
(1/25/12 )page 1 page 2, and page 3 of my proof that \[ u(x) = \int \frac{\rho (x+y)}{|y|}dy\] solves \[\nabla ^2 u(x) = - 4 \pi \rho(x) \].
(1/25/12) Sample problems for the first midterm.
(1/22/12) I'm going to make an attempt to get back on schedule. This week's homework will be sections 5.6, 6.1, and 6.2 (all of the homework from 6.2). I will post review problems later this week and keep to the schedule for the midterm, but it will not cover section 6.3 and the homework from 6.3 will not be due on 1/17/12.
(1/17/12) Bump functions
(1/10/12) Please volunteer to help me with Mathday. There will be 1200 high school students on campus and I will need at least 75 volunteers to help escort then around and do other routine duties that require no mathematical knowledge. Here is a link to my mathday website. Mathday is Monday, March 19, 2012 -- the monday of Spring Break.
(1/10/12) Kernels, a discussion of solving constant coefficient odes with kernels.
(1/6/12) Closed and exact vector fields
(12/28/11) Proof of the Riemann-Lebesgue Lemma.
(12/28/11) Abel's theorem on Fourier series.
(12/28/11) Uniform version of Abel's test
(12/28/11) A summary of facts about power series.
(12/28/11) A short note on compactness.
(12/28/11) A note on double series.
(12/28/11) A note on Abel's test on series.
(12/28/11) Dirichlet's test
(12/28/11) A general point-wise convergence theorem.
(12/28/11) How Newton made his famous discoveries: By always thinking about them. I keep the subject constantly before me and wait til the first dawnings open little by little into full light.
(12/28/11) Binomial series.
(12/28/11) A sentence from a letter by C. G. J. Jacobi to A. von Humboldt, If Gauss says he has proved something, it seems very probable to me; if Cauchy says so, it is about as likely as not; if Dirichlet says so, it is certain.
(12/28/11) Infinite sums, some notes on summing possible infinite sets of numbers.
(12/28/11) A simple discussion of the fundamental solution of a constant coefficient linear differential equation.
(12/28/11) A primer on differential equations.
(12/28/11) A direct, simple, proof of a convergence theorem for improper integrals.
(12/28/11) Problem 5.8.4b is not precisely stated. Assume that what is meant is that C is a piecewise smooth simple closed curve that is the boundary of an open connected set that contains the origin.
(12/28/11) A simple, quick, introduction to differential forms is Differential Forms by Harley Flanders which is available as a Dover reprint.
(12/28/11) Change of variables formula for spherical coordinates.
(12/28/11) Spherical Coordinates
(12/28/11) Here's a proof of the Cauchy-Binet formula, which has a nice application to give a formula for the measure of a parameterized manifold in Rⁿ.
(12/28/11) Smith's Prize exams. Look at 1854, #8.
(12/28/11) A proof of the Poincare Lemma. (Corrected on 1/18/11)
(12/28/11) The Marquis and the Land Agent by G. N. Watson, The Mathematical Gazette, Vol. 17, No. 222 (Feb., 1933), pp. 5-17
(12/28/11) I will not cover Raabe's test and I will not ask you to work any problems using it.
(12/28/11) Starter books on manifolds and Stokes's theorem: Loomis and Sternberg, Advanced Calculus; Hubbard and Hubbard, Vector Calculus, Linear Algebra, and Differential Forms; Flanders, Differential Forms.
(12/28/11) There is an error in the answer to problem 2b in section 5.8. The answer should be (xz²/2, -xyz-z²/2-x²/2, 0)+grad(f)
(12/28/11) For problem number 3 in section 5.8, assume that Laplacian(f)=div(H) has a solution. You don't need to justify this.
(12/28/11) The 1854 Smith Prize Exam at Cambridge University that Stokes wrote can be found in the Michigan online library. The Smith Exams are in the last volume and this exam is on page 320. Apparently William Thomson (Lord Kelvin) stated the result to Stokes in a letter in 1850. James Clerk Maxwell won the Smith Prize in 1854 and Gabriel Stokes himself won it in 1841 and Thomson in 1845. Other winners are Arthur Cayley (1842), G.H. Hardy (1901), Arthur Eddington (1907), Alan Turing (1936). A history of the prize.
(12/28/11) Make sure you check Jerry Folland's website for misprints.
(12/28/11) Syllabus(pdf)

morrow@math.washington.edu