Sigma notation

In this video you are introduced to the difference between a sequence and a series and then sigma notation.

Evaluate the following:

  1. \sum\limits_{r = 1}^4 {{\textstyle{{12} \over r}}}
  2. \sum\limits_{r = 3}^{r = 7} {(2r + 3)}
  3. \sum\limits_{r = 1}^4 {3{r^2}}
  4. \sum\limits_{r = 1}^5 3




2018-09-03T09:33:54+00:00
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