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GSoC 2018: Week 5


Hello everyone. Here is the brief summary of my work in the 5th week of GSoC period.

I started this week with testing miscellaneous algebraic test cases. Soon it was found that most test cases depend on rules of `Miscellaneous integration`. So I loaded those rules. There were few new structure in constraints. So parser too was updated for incorporating those. 

While testing, `ExpandIntegrand` did not function well. Matcher used in ExpandIntegrand was of sympy. I changed ExpandIntegrand using replace_all of matchpy. In few more functions I changed the structure using matchpy. In this week, a major part of the time was spent in utility functions. There are many changes. Also some of the test cases of last year was wrong. It gave different result in mathematica. The test cases which I have updated matches with Mathematica's output. I have pushed all changes of utility function in this PR.

Parallely I have also tested around 70 % of miscellaneous algebraic. I will complete the testing within one or two days. After this I will move on to exponential rules and exponential test cases.


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