<row> (in a matrix)

<row> is a Math component that defines the individual row entries in a <matrix>.

Attributes and Properties

Example: Defining a <matrix> with <row> components

One of several methods for defining a <matrix> in Doenet is to nest <row> components inside the opening and closing tags. Individual rows can be accessed using index notation with the rows property of the <matrix>.

Example: A <row> with symbolic math

Since a <row> is a Math Component, some of the general attributes of a <math> also work inside a <row>, such as functionSymbols. To use other <math> attributes (such as simplify), you can nest individual <math> components within a <row>.

Attribute Example: functionSymbols

The functionSymbols attribute designates special characters or strings that are to be considered functions. By default, only the characters $f$ and $g$ are considered function symbols when employed within a Math Component.

Attribute Example: splitSymbols

By default, letters placed adjacent to one another in a <math> component are separated by Doenet for computations, so xyz is interpreted as $x \cdot y \cdot z$, rather than a single variable composed of three letters. To override this default behavior, set the splitSymbols attribute to false.

Since a <row> is a type of Math Component, it follows this convention, with the exception that spaces between individual entries in a <row> are considered distinct entries (similar to the entries in a <mathList>, while in a general <math>, a space represents implied multiplication.)

Attribute Example: referencesAreFunctionSymbols

The referencesAreFunctionSymbols attribute designates special characters or strings that are to be considered functions, when they are references from another component by name. In this case, the symbolic function letters are selected at random from a list of 6 possibilities.

Note that, even though f and g are default function symbols when written directly, in this example they are referenced values and therefore we need to tell Doenet that they represent functions.

Property Example: rows

Technically speaking, the rows property belongs to the parent <matrix>, rather than the <row>. The information is repeated here, however, because it is a useful way of accessing individual rows and entries.