1.4, due on September 12th

I read the assigned reading. I had difficulty in the beginning with changing the order of the summations. It was easy where both summations were from zero to n, but after, with the triangle shaped sets, it was more difficult. The most interesting thing I encountered in the reading was that there are so many ways to modify summations. We can rearrange them, shift the indices, do one then the other, negate summations, factor out values, and transform them to form new ones. Over all, summations have a lot of power to them.

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