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1.A1;,,;,,2.,,,,,,(1)(2)1:42:f(1)f(-1)f(2)f(-2)f(a)f(-a)y=f(x)yxf(-x)=f(x)3:4:1xxf)(xxf1)(2(),[3,2]fxxx]1,1[,)()1(2xxxf)1,1[,)()2(2xxxf]2,1()1,2[,)()3(2xxxf(1)2342:1f(x),f(x)(2).(3)f(x),f(-x)=f(x)]1,1[,)()1(3xxxf)1,1[,)()2(3xxxf]2,1[)1,2[,)()3(3xxxff(x),f(-x)=f(x)3[a,2a+3]a=_____.1.1xxxf2)(3:;f(x)f(x)(3)f(-x)=f(x)f(x);f(-x)=-f(x)f(x).4.,::.,,.y.,y,xxxf1)()1(1)()2(2xxfxxxf2)()4(0)()3(xf(4)(3)...5(1oxy(2oxyoxyoyx61y=f(x)),0()0,(),(0),(03.2.y=f(x)yy.xy0x0123y),(01221)(2xxxf20),1(0),1()(xxxxxxxfy=f(x)DxD,-xD.f(-x)=-f(x)f(-x)=f(x)y.f(-x)=-f(x)f(-x)=f(x)y391-3A6-8391-3B2-41f(x)Rx0f(x)=2x+1,x0f(x).2f(x)Rx0f(x)=2x+1,f(x).2.1.4