I am a programmer (not a real mathematician, scientist or engineer) who wishes to insert just dx into an expression and have Maple recognise this as an infinitesimal difference in x rather than just a symbol named dx with no relation to x.

Is this possible in Maple?

I ask as I want to include dx as a normalising term in a derivation and hope that it will 'drop out' at a later stage.

Regards,

Will Furnass