The MakeInert command accepts an ordinary non-inert-form expression and returns an inert-form expression.  

The input should be a simple algebraic type.  No automatic simplification is prevented because the input was already created as a Maple object.

This function is part of the InertForm package, so it can be used in the short form MakeInert(..) only after executing the command with(InertForm). However, it can always be accessed through the long form of the command by using InertForm[MakeInert](..).

$\mathrm{with}\left(\mathrm{InertForm}\right)\:$

$\mathrm{MakeInert}\left('\log \left[10\right]'\left(x\right)\right)$

${\log }_{10}\left(x\right)$

$\mathrm{MakeInert}\left(\sin \left(x\right)\right)$

$\sin \left(x\right)$

$\mathrm{MakeInert}\left(\frac{x+1}{2yz}\right)$

$\frac{x+1}{2\ast y\ast z}$

$\mathrm{ex}≔\mathrm{MakeInert}\left(\frac{3\left(x+1\right)}{2yz}\right)$

$\mathrm{ex}≔\frac{\frac{3}{2}\ast \left(x+1\right)}{y\ast z}$

$\mathrm{lprint}\left(\mathrm{ex}\right)$

((3 %/ 2) %* (x %+ 1)) %/ (y %* z)

$\mathrm{Display}\left(\mathrm{ex}\,'\mathrm{inert}'=\mathrm{false}\right)$

$\frac{\frac{3}{2}\cdot \left(x+1\right)}{y\cdot z}$

The InertForm[MakeInert] command was introduced in Maple 18.

For more information on Maple 18 changes, see Updates in Maple 18.