Element Command
- Element( <List>, <Position of Element n> )
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Yields the nth element of the list.
Element({1, 3, 2}, 2) yields 3, the second element of \{1, 3, 2}.
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Element({a, b, c}, 2) yields b, the second element of \{a, b, c}.
- Element( <Matrix>, <Row>, <Column> )
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Yields the element of the matrix in the given row and column.
Element({{1, 3, 2}, {0, 3, -2}}, 2, 3) yields -2, the third element of the second row of
\(\begin{pmatrix}1&3&2\\0&3&-2\end{pmatrix}\).
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Element({{a, b, c}, {d, e, f}}, 2, 3) yields f, the third element of the second row of
\(\begin{pmatrix}a&b&c\\d&e&f\end{pmatrix}\).
- Element( <List>, <Index1>, <Index2>, …)
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Provided list is n-dimensional list, one can specify up to n indices to obtain an element (or list of elements) at given coordinates.
Let L = \{\{\{1, 2}, \{3, 4}}, \{\{5, 6}, \{7, 8}}}.
Then Element(L, 1, 2, 1) yields 3, Element(L, 2, 2) yields \{7, 8}.
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