Difference between revisions of "Identity Command"

Revision as of 03:42, 18 September 2012

Identity[ <Number n> ]

Gives the identity matrix of the given order.

Example:

Identity[3] yields the matrix \begin{pmatrix} 1&0&0\\ 0&1&0\\ 0&0&1
\end{pmatrix}.

Note:

If A is a square matrix of order n, A^0 yields the same as Identity[n].

Identity[ <Number> ]: Gives the identity matrix of the given order.; Example:
Identity[3] yields the matrix \begin{pmatrix} 1&0&0\\ 0&1&0\\ 0&0&1
\end{pmatrix}.

Note:
If A is a square matrix of order n, A^0 yields the same as Identity[n].

@@ Line 9: / Line 9: @@
 \end{pmatrix}</math>''.</div>}}
 {{note|1=<div>
-* If ''A'' is a square matrix of order ''n'', <code><nowiki>A^0</nowiki></code> yields the same as <code><nowiki>Identity[n]</nowiki></code>.
+If ''A'' is a square matrix of order ''n'', <code><nowiki>A^0</nowiki></code> yields the same as <code><nowiki>Identity[n]</nowiki></code>.
-* This command is not dynamic. For example the result of <code><nowiki>Identity[a]</nowiki></code> will not change if ''a'' is changed.</div>}}
+</div>}}
 ==CAS Syntax==
 ;Identity[ <Number> ]