symbolic constants in CAS

[Rich]

Hi,

Has anyone found a resolution to the issue in this thread? I tried searching on this forum and a few others, but have not found a solution.

I am taking Modeling and Control this semester at college, I would like to be able to use Laplace transforms from my HP Prime.

Entering this: laplace(e^(-a*t),t,s)
Gives me this: "Undef/Unsigned Inf encountered in limit"

Entering this: assume(s>0)
then checking if the CAS s variable exist in var menu, it does

Entering this: laplace(e^(-a*t),t,s)
Gives me this: "Undef/Unsigned Inf encountered in limit"
I then go back to check if the s variable exist and it no longer does. I then did a factory reset in the FLS utility menu and the same issue happens.

Any help would be great. Thank you