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...Intermediate mathematics introduction to partial dierentiation rhoran m lavelle the aim of this document is provide a short self assessment programme for students who wish acquire basic understanding c copyright plymouth ac uk mlavelle last revision date may version table contents rules higher order derivatives quiz on solutions exercises quizzes thefull range these packages and some instructions should they be required can obtained from our web page support materials section in package introductory rates change functions were shown measured by derivative many applications require with more than one variable ideal gas law example pv kt where p pressure v volume t absolute temperature k constant rearranging equation as shows that function if variables say kept xed changes then respect measures rate case it called written nd b solution part proceeds follows treated calculation thus ktv...