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Hi everybody

I use this lib for Laplace and Z transform.
For Laplace Transform, in the notice, he wrote this:

->L,flg2 2: { 'COS(b)''-(2*SI...
1: 't*COS(a*t+b)' ->->->->->->->-> 1: { 1 0 '2*a^2' 0 'a^
4' }

But for me, if I've 't*COS(a*t+b)' in the first level, the command return this error:
"Error:
Bad Argument Value"

And I don't understand where is the problem.

Someone can help me, please :)

Nico