Programmer Guide/Command Reference/EVAL/mul: Difference between revisions

Revision as of 14:57, 8 April 2011

Compute the inverse of x.

inv(x_scalar)

inv(x_matrix)

Result: The result has the same type as the argument x and is the inverse of x. The argument x must be a scalar or a square matrix.
Note: This function can be used as alias for the operator *, which do not implement the dyadic product. both arguments x and y are vectors, the dyadic product is computed, otherwise the operator * is applied to x and y.

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 ;Note: This function can be used as alias for the [[Programmer_Guide/Command_Reference/EVAL#Operators|operator *]], which do not implement the dyadic product. both arguments ''x'' and ''y'' are vectors, the dyadic product is computed, otherwise the [[Programmer_Guide/Command_Reference/EVAL#Operators|operator *]] is applied to ''x'' and ''y''.
-;See also: [[Programmer_Guide/Command_Reference/EVAL/trn|trn]], [[Programmer_Guide/Command_Reference/EVAL/mul|mul]], [[Programmer_Guide/Command_Reference/EVAL/complex arithmetic#special functions|ctrn, cmulv]],
+;See also: [[Programmer_Guide/Command_Reference/EVAL/trn|trn]], [[Programmer_Guide/Command_Reference/EVAL/inv|inv]], [[Programmer_Guide/Command_Reference/EVAL/complex arithmetic#special functions|ctrn, cmulv]],
 [[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]
-{{DISPLAYTITLE:{{SUBPAGENAME}}}}
-=====mul=====
-Calculate the dyadic product of <var>x</var>v and <var>y</var>v.
-=====Usage:=====
-<code>mul(<var>x</var>v,<var>y</var>v)</code>
-=====Return Type:=====
-matrix - (nrow(<var>x</var>v) x nrow(<var>y</var>v))
-=====Notes:=====
-Note that if one of the arguments is not a vector, then <var>x</var> * <var>y</var> is calculated.