Difference between revisions of "Identity Command"

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0&0&1
 
0&0&1
 
\end{pmatrix}</math>''.</div>}}
 
\end{pmatrix}</math>''.</div>}}
{{note|1=<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>.</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>.
 
* This command is not dynamic. For example the result of <code><nowiki>Identity[a]</nowiki></code> will not change if ''a'' is changed.</div>}}
 

Revision as of 11:23, 14 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].
  • This command is not dynamic. For example the result of Identity[a] will not change if a is changed.

CAS Syntax

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].
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