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...Understanding vector calculus jerrold franklin preface my purpose in this development of is to present it a way that will prove useful you for the rest your career science or mathe matics can think presentation as workbook learning how use practical calculations and derivations after study ing text doing problems should not have memorize long equations need look anything up while work eld i want get point where treat on same level would simple algebraic working them out go necessary background using book just knowledge one dimensional dierential integral having had multivariable course unnecessary because aspect be developed from scratch fact might unlearn some things covered if relied too much coordinate systems rather than methods we introduce although examples are usually related physical ex amples particularly electromagnetism any back ground physics new simply disregard concentrate mathematics other hand relatively nd references interest treating what sometimes called natural unit...