recurse : true or false

This option specifies whether the transformation should be applied to subexpressions of the original expression expr. The default is false.

The convert(expr, ifelse) command accepts a Maple piecewise expression and return a result written in terms of nested calls to the ifelse function.

$p≔\mathrm{piecewise}\left(2<x\&comma;1\&comma;1<x\&comma;2\&comma;3\right)$

$p≔\left\{\begin{array}{cc}1& 2<x\\ 2& 1<x\\ 3& \mathrm{otherwise}\end{array}\right.$

$\mathrm{convert}\left(p\&comma;\mathrm{ifelse}\right)$

$\mathrm{ifelse}\left(2<x\&comma;1\&comma;\mathrm{ifelse}\left(1<x\&comma;2\&comma;3\right)\right)$

$p≔\mathrm{piecewise}\left(2<x\&comma;1\&comma;\mathrm{piecewise}\left(x^2<y\&comma;x^2\&comma;0<y\&comma;x\&comma;0\right)\right)$

$p≔\left\{\begin{array}{cc}1& 2<x\\ \left\{\begin{array}{cc}{x}^2& x^2<y\\ x& 0<y\\ 0& \mathrm{otherwise}\end{array}\right.& \mathrm{otherwise}\end{array}\right.$

$\mathrm{convert}\left(p\&comma;\mathrm{ifelse}\right)$

$\mathrm{ifelse}\left(2<x\&comma;1\&comma;\left\{\begin{array}{cc}{x}^2& x^2<y\\ x& 0<y\\ 0& \mathrm{otherwise}\end{array}\right.\right)$

$\mathrm{convert}\left(p\&comma;\mathrm{ifelse}\&comma;\mathrm{recurse}\right)$

$\mathrm{ifelse}\left(2<x\&comma;1\&comma;\mathrm{ifelse}\left(x^2<y\&comma;x^2\&comma;\mathrm{ifelse}\left(0<y\&comma;x\&comma;0\right)\right)\right)$

The convert/ifelse command was introduced in Maple 2021.

For more information on Maple 2021 changes, see Updates in Maple 2021.