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## 9 Vector/Matrix Functions

Many of the commands described here begin with the `v` prefix. (For convenience, the shift-`V` prefix is equivalent to `v`.) The commands usually apply to both plain vectors and matrices; some apply only to matrices or only to square matrices. If the argument has the wrong dimensions the operation is left in symbolic form.

Vectors are entered and displayed using ‘`[a,b,c]`’ notation. Matrices are vectors of which all elements are vectors of equal length. (Though none of the standard Calc commands use this concept, a three-dimensional matrix or rank-3 tensor could be defined as a vector of matrices, and so on.)