From CAS view I want to calculate the inverse transform Laplace of a function...

invlaplace(1/(1+0.2*x+x^2) for example... It's Ok I have a blablabla function of small x as a result. Good! BUT... :

I need to place a big X in place of small x for future copy/paste in the symb view F1(X)=blabla of X and then plotting these...

invlaplace(1/(1+0.2*x+x^2),x='X') doesn't work

subst template or subst(blabala of x, 'X') doesn't work

What is the fastest way... Assuming you have a long function of small x as a result in CAS view How to transfer it in F1(X)= on symb function view ?

*Edited: 19 Oct 2013, 10:04 a.m. *