Mathematicsisplayinganevermoreimportantroleinthephysicalandbiologicalsciences，provokingablurringofboundariesbetweenscientificdisciplinesandaresurgenceofinterestinthemodernaswellastheclassicaltechniquesofappliedmathematics.Thisrenewalofinterest，bothinresearchandteaching，hasledtotheestablishmentoftheseries：TextsinAppliedMathe-rustics(TAM).　　Thedevelopmentofnewcoursesisanaturalconsequenceofahighlevelofexcitementontheresearchfrontierasnewertechniques，suchasnumericalandsymboliccomputersystems，dynamicalsystems，andchaos，mixwithandreinforcethetraditionalmethodsofappliedmathematics.Thus，thepurposeofthistextbookseriesistomeetthecurrentandfutureneedsoftheseadvancesandencouragetheteachingofnewcourses.　　此书为英文版。