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Assigned Tuesday February 22; due Friday March 4, 2PM,
at SS 1071

this document in PDF: HW.pdf

**Required reading. ** All of Spivak's chapter 19,
including the appendix.

**To be handed in. ** From Spivak Chapter 19: problems
7(vi), 9(vi), 21a and 39. From the appendix to that chapter: problems 11
and 13.

**In class review problem(s)** (the problem from
HW17 postponed to Thursday February 24). Chapter 19
problem 6i: Find

**Recommended for extra practice. ** All else in
problems 7 and 9 of Chapter 19. Never finish your work!!! Just get to the
point where you are convinced that you know how to continue. In
particular, avoid writing what you can do in your head and don't bother
to simplify your results. Also, problems 17, 21b, 24, 33, and from the
appendix, problem 2.

**Just for fun. ** We all know that
is a very good approximation to ; in fact, it is
not difficult to find people who think that *is*
. Prove them wrong, and also decide which one is bigger
( or
) by computing the integral

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Dror Bar-Natan 2005-02-22