| FreeQ {lazy.symbolic} | R Documentation |
Returns TRUE if expression is free of varname
Description
Returns TRUE if expression is free of varname
Usage
FreeQ(expr, varname)
Arguments
expr |
expression as a string |
varname |
the name of the variable to inspect |
Examples
FreeQ("tr(A%*%inv(t(X)))","X")
FreeQ("tr(A%*%inv(t(X1)))+B","X")
[Package lazy.symbolic version 1.0.0.20250803 ]