Solved
It is indeed difficult to get the symbolic output that you want.
With the right Mathcad (11) and some luck:

Success!
Luc
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
It is indeed difficult to get the symbolic output that you want.
With the right Mathcad (11) and some luck:

Success!
Luc
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.