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Unless otherwise indicated, copyrights on the content contributed to the WeBWorK Open Problem Library are held by the
author(s) of that content. This includes the problem files (*.pg) and any associated auxililary files such as images and
custom macro files.
Unless otherwise indicated, all contributions to the WeBWorK Open Problem Library are licensed under the
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit
or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View,
California, 94041, USA.
Contributors may use alternative open source licenses as defined by the Open Source Initiative:
Currently, to specify an alternative open source license to accompany a new contribution to the WeBWorK Open Problem
Library, contributors should include the alternative license statement in the top-level directory containing their
contribution; contributors may also optionally include the license statement below the END_DOCUMENT(); line in each
of their contributed problems. License statements should include, at a minimum, the name of the license being applied
and a link to the full statement of the license.