I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/4.0CC BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue

The .svg version of the file is produced by

• the following .fig source code,
• several command line options: xfig -specialtext -latexfonts -startlatexFont default FILENAME.fig, and
• exporting to .svg format.

#FIG 3.2  Produced by xfig version 3.2.6a
Landscape
Center
Inches
Letter
100.00
Single
-2
1200 2
5 1 0 4 0 7 50 0 -1 0.000 0 0 0 0 -3030.933 5102.935 3586 2973 3916 5349 3593 7211
5 1 0 4 0 7 50 0 -1 0.000 0 0 0 0 5283.212 9767.374 3608 7226 5101 6729 6923 7203
1 3 0 3 7 7 100 0 -1 0.000 1 0.0000 2415 8670 81 81 2415 8670 2445 8745
2 1 0 3 0 7 100 0 -1 0.000 0 0 -1 0 0 3
        3751 6654 4051 6654 4051 6954
2 1 0 3 0 7 50 0 -1 0.000 0 0 -1 0 0 4
        5371 4224 5333 4464 5851 4224 6803 5439
3 2 0 4 0 7 50 0 -1 0.000 0 0 0 3
        3601 2990 4981 5139 6923 7197
        0.000 -1.000 0.000
4 0 0 100 0 0 36 0.0000 4 270 300 5145 7433 x\001
4 0 0 100 0 0 36 0.0000 4 405 300 3180 5535 y\001
4 0 0 100 0 0 36 5.3407 4 450 2190 4926 3937 >    x + y\001
4 0 0 50 0 18 36 0.0000 4 465 1335 4171 6219 k < 0\001
4 0 0 100 0 0 24 5.3407 4 270 210 6314 5571 2\001
4 0 0 100 0 0 24 5.3407 4 270 210 5781 4788 2\001