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From: ix742@sdcc6.UUCP (James Hayes)
Newsgroups: net.jokes,net.math
Subject: Re: Math
Message-ID: <2446@sdcc6.UUCP>
Date: Fri, 28-Feb-86 22:26:13 EST
Article-I.D.: sdcc6.2446
Posted: Fri Feb 28 22:26:13 1986
Date-Received: Sun, 2-Mar-86 00:22:03 EST
References: <468@watdragon.UUCP>
Reply-To: ix742@sdcc6.UUCP (James Hayes)
Distribution: na
Organization: UC San Diego EE/CS Department.
Lines: 35
Xref: watmath net.jokes:16973 net.math:2917
Summary: Homework

Seeing that finals are almost here at UCSD, I decided I should start
going over the homework solutions I've neglected to read.  I came
upon:

Page 143: #3)  Determine if the following are nonsingular:

     a) etc  b) etc ....

The solutions read:

Page 143: #3) Bathroom problems.  Use chapter 1 stuff.

-------------------------------------------------------------

Page 143: #4) Determine the inverse of this matrix:

      +-       -+
      | 1 -1  1 |
      | 0  1  2 |
      | 1  0  2 |
      +-       -+

The solutions read:

Page 143: #4)  Use method in previous chapters.  ie:

      +-                   -+       +-              -+
      | 1 -1  1  |  1  0  0 |       | 1  0  0 |      |
      | 0  1  2  |  0  1  0 | ===>  | 0  1  0 | blah |  etc...
      | 1  0  2  |  0  0  1 |       | 0  0  1 |      |
      +-                   -+       +-              -+

-------------------------------------------------------------

One does not expect to see this at 3 A.M.