1、p20172018c1p(n)Y!JK:K12K,zK5.123456789101112BCBCDCDAACDB!WK:K4K,zK5.13.94214.12515.5016.12,54n!)K:)Ai,yL.17.(1)n,=n=2k(k Z),f(x)=cos2(2k+x)sin2(2kx)cos2(22k+1)x=cos2xsin2(x)cos2(x)=cos2x(sinx)2(cosx)2=sin2x.(2)n,=n=2k+1(k Z),f(x)=cos2(2k+1)+xsin2(2k+1)xcos22(2k+1)+1x=cos22k+(+x)sin22k+(x)cos22(2k+1)
2、+(x)=cos2(+x)sin2(x)cos2(x)=(cosx)2sin2x(cosx)2=sin2x,.(4)nf(x)=sin2x(Ka).(5)(2)d(1)f(2014)+f(5031007)=sin22014+sin2 10062014.(7)=sin22014+cos22014=1.(10)18.(1)dsin+cos=3+12sincos=m2(3+1)2 8m 0,.(2)(sin+cos)2=1+2sincos(3+12)2=1+m,.(4)m=32.(6)(2)dsin+cos=3+12sin cos=34.(8)sin=32,cos=12sin=12,cos=32.(
3、10)q (0,2)=6=3.(12)19.(1)dL.,=y=Acos(t+)+B,.(1)A=2.40.62=0.9,B=2.4+0.62=1.5,.(3)dL6,=6.(4)y=0.9cos(6x+)+1.5,qL:(3,2.4),2.4=0.9cos(6 3+)+1.5,=2,.(5)y=0.9sin(6t)+1.5,t 0,24.(6)(2)-y 1.05sin(6t)12.(7)2k 6 6t 2k+76,k Z,12k 1 t 12k+75 t 18,.(9)5 t 711 t 18,.(11)US5:7:911:18:m|,U(8S.(12)20.(1)x (0,2),2x+6
4、 6,76,sin(2x+6)12,1,.(2)a 0,f(x)b,3a+b,.(4)q 5 f(x)1,b=53a+b=1,.(5)da=2,b=5.(6)(2)g(x)=2 tanx,g(x)30,3)N4O=.(7)g(x)T=,x=k+2,T2=2 3,.(9)q=32,x=3,Kg.(10)0 32(K8mX),V).(12).p(n)o?1121.(1)(0.004a0.0180.02220.028)101 a0.006;.(2).0.5 0.04 0.06 0.22=0.18dx7010=0.180.28x 76.43 76.43.(4).2350,60)k500.006103(
5、)PA1,A2,A3;340,50)k500.004102(),PB1,B2,.(5).l52,kU(Jk10,.(7).A1,A2,A1,A3,A1,B1,A1,B2,A2,A3,A2,B1,A2,B2,A3,B1,A3,B2,B1,B2.(9).q2340,50)(Jk1,=B1,B2,.(10).VP 110.(12).22.(1)f(x),q0 ,=2 f(x)=sin(x),.(2).qf(x),=2,.(3).f(x)=sin2x.(4).(2)dKg(x)=2sin(2x+3)+1,.(6).dg(x)=0,2x+3=2k 6,k Z2x+3=2k+76,k Z,=x=k 4,k Zx=k+512,k Z.(8).”S:x1=4,x2=512,x3=34,K:mlO323,.(10).eb a,Ib a=15 3+14 23=433.(11).b a433p(n)o?12
