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1、FunctionsandChangeThispageintentionallyleftblankFunctionsandChangeAModelingApproachtoCollegeAlgebraandTrigonometryBruceCrauder/BennyEvans/AlanNoellOklahomaStateUniversityThisprojectwassupported,inpart,bytheNationalScienceFoundationOpinionsexpressedarethoseoftheauthorsandnotnecessarilythoseoft
2、heFoundationHoughtonMifflinCompanyBostonNewYorkGratitudeandThanksWearedeeplygratefulforourfamilieswhosupportedusandbelievedinthisproject.ForDouglas,Robbie,and,mostofall,Anne—BCCForCarla,Daniel,andAnna—BDEForEvelyn,Philip,Laura,Stephen,andespeciallyLiz—AVNPublisher:RichardStrattonSeniorSponsor
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4、huckDuttonCoverimage:“HerdofBisonatWatertonLakes,”©Royalty-Free/CORBISPhotocredits:Ch.P:p.1,©Astrofoto/PeterArnold,Inc.;Ch.1:p.19,©AlTielemans/SI/NewSport/CORBIS;Ch.2:p.95,©RobertoMelchiorre/Zefa/CORBIS;Ch.3:p.185,©RobertBrenner/PhotoEdit,Inc.;Ch.4:p.269,©KevinWestenberg/Live8viaGettyImages;C
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6、isworkmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandrecording,orbyanyinformationstorageorretrievalsystemwithoutthepriorwrittenpermissionofHoughtonMifflinCompanyunlesssuchcopyingisexpresslypermittedbyfederalcopyrightlaw.AddressinquiriestoColleg
7、ePermissions,HoughtonMifflinCompany,222BerkeleyStreet,Boston,MA02116-3764.PrintedintheU.S.A.LibraryofCongressControlNumber:2006936631ISBN-13:978-0-618-85804-0ISBN-10:618-0-85804-0123456789–DOW–1110090807ContentsPrefacexi1.4Functionsgivenbyword