Thank you Alex for your reply

Sorry, I'm new here ;)

this is my file : W11.mw

Q(x,t) is the Nonhomogenous part of a linear Partial Differential Equation, I want to solve it Analytically,

by "approximate" I mean, something like Pade approximaion of Q(x,t) , but I couln't find Pade approximation for two-variable functions.

Thank you Alex for your reply

Sorry, I'm new here ;)

this is my file : W11.mw

Q(x,t) is the Nonhomogenous part of a linear Partial Differential Equation, I want to solve it Analytically,

by "approximate" I mean, something like Pade approximaion of Q(x,t) , but I couln't find Pade approximation for two-variable functions.