Due Fri, Sept 12 p.4, ex 1-4 p.7, ex 1,2 p.11, ex 1-4 p.13, ex 1,2,8 p.21, ex 1,5,6,10 p.29, ex 1, 3, 6 p.33, ex 1, 2, 3, 7 ===================================== Due Fri, Sept 19 p37, ex 2,3,4 p44, ex 1, 3a, 4, 5 =================================== Due Fri, Sept 26 p44, ex 6,7 p56, ex 10,11 (Justification on these ex. not required). p62, ex 1,2 (Justification not required), and 3 (do this by difference quotient) p.71, ex 1, 2a,b,c, 3. p. 77, ex 1a,c,d, 2, 7 ====================================== MIDTERM I on Wed. will cover up to and including Harmonic functions (p.81) Due Friday, Oct 3 p. 81, ex 1,2, 7, 8, 9 (to show orthogonality you can instead cite what we did in class) p. 92, ex 5, 6, 7, 8 ====================================== Due Friday, Oct 10 p.97, ex 1, 2, 3, 5, 7 (use ALL values of log, not just principal branches) p. 100, ex 6 p. 104, ex 1, 2(find ALL values). p. 108, ex 2, 3, 8, 14. p. 114, 1a,b, 2, 3. ======================================= Due Friday, Oct 17 NOTE:You do not have to distinguish between Log and ln as in the book. All complex logs should be treated the same: They are only defined up to multiples of 2\pi ni, unless specified otherwise. p. 121, ex 2, 3, 4, p. 135, ex 1-7 p. 140, ex 1-7. ======================================= Due Friday, Oct 24 p149, ex 5 p160, ex 1-4, 6, 7 You can use Cauchy's thm as presented in class: \int_\partial R f(z)dz =0, where f is analytic in R and on its boundry \partial R which is oriented positively with respect to R. ================================================================ ATTENTION!!! MIDTERM II WILL BE GIVEN ON FRIDAY, NOVEMBER 7 (not Nov 5 or Nov 12) THERE WILL BE NO CLASS ON WEDNESDAY, NOVEMBER 5 (study day and election recovery day) ================================================================== Due Friday, Oct. 31 p. 170, ex 1-8. p. 178, ex 1, 2, 5, 9. +++++++++++++++++++++++++++++++++++++++++ Midterm II will cover from p.82 to p. 180 = the end of Ch 4. 2/5 of the exam will be on interplay between harmonic and analytic functions. No homework assignment for Friday, Nov 7. ================================================================= Due Friday, Nov 14 p. 188, ex 2, 3, 4, 9a. p. 197, ex 2 - 8, 13. ================================================================= Due Friday, Nov 21 p. 205, ex 1-6, 8, 10. p. 219, ex 1-3. ADD p. 220, ex 6,7 p. 225, ex 1 ================================================== No homework due on November 28 ================================================== Wednesday, Nov 26: A Special Thankgiving Program: `Outside In' and `Not Knot', two award winning math videos made at UMN about 15 years ago. 'Outside In' is a visual `proof' of the theorem that in 3D a sphere can be turned inside out smoothly. Steve Smale won a Fields medal for proving this, but it took a while before anyone could figure out what the process really looked like. `Not Knot' is the first and only video ever made to show what it would be like to live in a space where light follows not euclidean straight lines but lines in a different, noneuclidean metric: a metric with a negative "curvature"---euclidean space has 0 curvature, the 2-sphere has positive curvature. It was thought for a time that the universe itself might be a hyperbolic space. Some scenes are quite spectacular and are often copied in mathematical papers, lectures, and bar rooms (because of the exotic otherworldly quality of the pictures.) ======================================================= Due Friday, December 5 : LAST HOMEWORK ASSIGNMENT Advice: Dont wait to the last minute before doing the problems. p. 239, ex 1a,b,c,d, 2, 3, 4 p. 243, ex 1, 2b,c p. 248, ex 1, 2, 3, 4 (Note that the book doesnt use the factor 1/2\pi i in defining residue) p. 267, ex 1, 2, 4, 6 p. 275, ex 1, 5, 6 p. 290, ex 1, 2 p. 318, ex 4, 5 p. 324, ex 5, 6, 7, 9 p. 330, ex 2(just use the fact circles/lines go to circles/lines, in particular, what happens to the real line? Also Mobs like all conformal maps, preserve orientation), 7. ========================================================= FINAL EXAM INFO Know about: Using complex derivatives Elementary conformal mapping Mobs Cauchy Integral Theorem and its application to derivatives deriving Tayor expansions residues Harmonic functions Taylor series and manipulations, e.g. derivatives Application of residues to evaluating integrals