Alevel Further Math 1 级数导学.docx

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FlChapter5seriesoffunctionPart 1Discovery.StudyBywritingoutthetermsoftheseries.findout:1. What,stheresultof3r?r*HowaboutEar?r=l2. Whastheresultof+l)r-IHowaboutZ(r+)r-l3. Ingeneral,Owhattheresultof(ar+b)ewhat,stheresultofg(/+)whatstheresultof(ar-t-h)r-lOwhatstheresultofNZ(a/+cr+d)AReviewstandardresults:D-r=l2)r=r-l3)力=r=lPart 2IExercise11Workoutthesumoftheseseries:55a)(2r)b)(2-5r)r-lO(r-l)z=l0d)S+3)r三l4lb)Hcnccfindg(2r+3)IExcrcisc2a)ShowthatZ(2r+3)=(+2)(”+6)r-lIExcrcisc3)511b)Calculate(r+2)(r+5)r-la)Showthat(r+2)(r+5)=-(/+I211+41)r-l35Canyouworkout(r+2)(r+5)?/-20