b43115…: “Without a red parallelogram”

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Worked Out Examples Problem Videos

The following video may be helpful when trying to solve this example. Note that you may skip to the end of the video to get completion credit for this page if you don’t need to watch it.

Practice Problems: Sigma Notation

1 :

Compute the following sum: $\sum \limits _{k=\sage {p1indexStart}}^{\sage {p1indexEnd}} \sage {p1f1(x=k)} = \answer {\sage {p1ans}}$

Remember that the index ( $k$ in this case) starts at the start value ( $\sage {p1indexStart}$ ) and ends at the end value ( $\sage {p1indexEnd}$ ) and includes both values, so you should be adding a total of $\sage {p1totalTerms}$ terms being added together.

Also don’t forget that Xronos doesn’t need you to simplify your answers here, so don’t worry about making everything “nice”. This is just to make sure you know how the notation works!