I forgot to say that I did:
(%i12) postfix("'");
(%o12) '
(%i13) u':= 'diff(u,t);
(%o13) 'u:='diff(u,t,1)
And that seems to be the cause of trigsimp breaking.
Ismael
Ismael Garrido escribi?:
> And then, while doing manipulations I get:
> (%i47) ratsimp(%);
> (%o47)
> matrix([cos(phi)*('diff(r,t,1))-sin(phi)*('diff(phi,t,1))*r],[sin(phi)*('diff(r,t,1))+cos(phi)*('diff(phi,t,1))*r])=matrix([(-cos(phi)*sin(phi)^2-cos(phi)^3)*r^3+(sin(phi)+cos(phi))*r],[(-sin(phi)^3-cos(phi)^2*sin(phi))*r^3+(sin(phi)-cos(phi))*r])
>
>
> (%i48) trigsimp(%);The argument to put must be a symbolic
> name:'diff(sin,t,1)#0:
> trigsimp(?_l=[matrix([cos(phi)*'diff(r,t,1)-sin(phi)*'diff(phi,t,1)*r],[sin(phi)*'diff(r,t,1)+cos(phi)*'diff(phi,...)
> -- an error. Quitting. To debug this try debugmode(true);
>