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# 4.12: Chapter Review

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In this chapter, we used a vector to store the elements of a sequence. We learned how to select elements from a vector and perform vector arithmetic. We performed reduce and apply operations using for loops, MATLAB functions, and element-wise operations.

Here are some terms from this chapter you might want to remember.

A vector is a sequence of values, which is a kind of matrix, also called an array in some MATLAB documentation.

An index is an integer value used to indicate one of the elements in a vector or matrix (also called a subscript in some MATLAB documentation).

An operation is element-wise if it acts on the individual elements of a vector or matrix (unlike some linear algebra operations).

You can apply an operation to all elements of a vector, and you can a vector to a single value, for example by computing the sum of the elements.

In the next chapter, we’ll meet the most important idea in computer programming: functions!

This page titled 4.12: Chapter Review is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Allen B. Downey (Green Tea Press) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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