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seen Aug 21 '13 at 11:42

Nov
27
awarded  Scholar
Nov
26
accepted Differential equation D'Alembert Approach with coordinate transformation.
Nov
26
comment Differential equation D'Alembert Approach with coordinate transformation.
thanks . that's what i was thinking, i just didn't remember the rule to back it up.
Nov
26
awarded  Editor
Nov
26
revised Differential equation D'Alembert Approach with coordinate transformation.
deleted 8 characters in body
Nov
26
comment Differential equation D'Alembert Approach with coordinate transformation.
yes you are right.
Nov
26
awarded  Student
Nov
26
asked Differential equation D'Alembert Approach with coordinate transformation.