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1、曲线围成的区域,30 JUN 2010,X型区域,用 Filling,曲线下方的区域,Plotfx,x,a,b,Filling-Bottom,FillingStyle-Yellow,fx_:=x2; Quxian=Plotfx,x,-0.1,1.1,PlotStyle-AbsoluteThickness2,Red; Quyu=Plotfx,x,0,1,Filling-Bottom,AspectRatio-1,PlotRange-All,Ticks-1,0,1,-1,0,1,FillingStyle-Green; ShowQuyu,Quxian,30 JUN 2010,曲线与x轴围成的区域,Pl
2、otfx,x,a,b,Filling-Axis,FillingStyle-Yellow,fx_:=Sinx; Quxian=Plotfx,x,-1.1,1.1,PlotStyle-AbsoluteThickness3,Red; Quyu=Plotfx,x,-1,1,Filling-Axis,AspectRatio-1,PlotRange-All,Ticks-1,0,1,-1,0,1,FillingStyle-Green; ShowQuyu,Quxian,30 JUN 2010,两曲线围成的区域,Quyu=Plotfx,gx,x,a,b,Filling-1,fx_:=x;gx_:=x2; Qux
3、ian1=Plotfx,x,-1.3,1.3,PlotStyle-AbsoluteThickness2,Red; Quxian2=Plotgx,x,-1.3,1.3,PlotStyle-AbsoluteThickness2,Blue; Quyu=Plotfx,gx,x,0,1,Filling-1-2,AspectRatio-1,PlotRange-All,Ticks-1,0,1,-1,0,1,FillingStyle-Green; ShowQuyu,Quxian1,Quxian2,30 JUN 2010,fx_:=Sinx;gx_:=Cosx; Quxian1=Plotfx,x,0,2 Pi,
4、PlotStyle-AbsoluteThickness2,Red; Quxian2=Plotgx,x,0,2Pi,PlotStyle-AbsoluteThickness2,Blue; Quyu=Plotfx,gx,x,0,2Pi,Filling-1-2,AspectRatio-.8,PlotRange-All,Ticks-0,Pi/2,Pi,3Pi/2,2 Pi,-1,0,1,FillingStyle-Yellow; ShowQuyu,Quxian1,Quxian2,30 JUN 2010,fx_:=SinPi x Exp-(x-1)2;gx_:=4Cosx-2; Quxian1=Plotfx
5、,x,0,4,PlotStyle-AbsoluteThickness2,Red; Quxian2=Plotgx,x,0,4,PlotStyle-AbsoluteThickness2,Blue; Quyu=Plotfx,gx,x,0.6,3.6,Filling-1-2,AspectRatio-1,PlotRange-All,Ticks-0,1,2,3,4,-1,0,1,2,3,4,FillingStyle-LightRed,AxesOrigin-0,0; ShowQuyu,Quxian1,Quxian2,30 JUN 2010,fx_:=x;gx_:=x3; Quxian1=Plotfx,x,-
6、1.3,1.3,PlotStyle-AbsoluteThickness2,Red; Quxian2=Plotgx,x,-1.3,1.3,PlotStyle-AbsoluteThickness2,Red; Quyu=Plotfx,gx,x,-1,1,Filling-1-2,AspectRatio-1.4,PlotRange-All,Ticks-1,0,1,-1,0,1,FillingStyle-Green; ShowQuyu,Quxian1,Quxian2,30 JUN 2010,X型区域,用 RegionPlot,曲线下方的区域,fx_:=x2; Quxian=Plotfx,x,-1,1.1,
7、PlotStyle-AbsoluteThickness4,Red; Quyu=RegionPlot0Green; ShowQuyu,Quxian,PlotRange-All,Axes-Automatic,AspectRatio-0.7,Frame-False,Ticks-1,0,1,0,1,2,30 JUN 2010,曲线与x轴围成的区域,fx_:=Sinx; Quxian=Plotfx,x,-4,4,PlotStyle-AbsoluteThickness3,Red; Quyu=RegionPlotfxy0 ,x,-Pi,Pi ,y,-1,1,PlotStyle-Cyan; Quyu2=Reg
8、ionPlotfxGreen; ShowQuyu,Quyu2,Quxian,PlotRange-All,Axes-Automatic,AspectRatio-1,Frame-False,Ticks-Pi,-Pi/2,0,Pi/2,Pi,-1,0,1,30 JUN 2010,两曲线围成的区域,fx_:=x;gx_:=x2; Quxian=Plotfx,x,-0.1,1.1,PlotStyle-AbsoluteThickness3,Red; Quxian2=Plotgx,x,-0.1,1.1,PlotStyle-AbsoluteThickness3,Blue; Quyu=RegionPlotgxG
9、reen; ShowQuyu,Quxian,Quxian2,PlotRange-All,Axes-Automatic,AspectRatio-1,Frame-False,Ticks-1,0,1,0,1,2,30 JUN 2010,fx_:=x+1/2;gx_:=x2+1/5; Quxian=Plotfx,x,0.1,1,PlotStyle-AbsoluteThickness3,Red; Quxian2=Plotgx,x,0.1,1,PlotStyle-AbsoluteThickness3,Blue; Quyu=RegionPlotgxGreen; ShowQuyu,Quxian,Quxian2
10、,PlotRange-All,Axes-True,AxesOrigin-0,0,AspectRatio-1,Frame-False,Ticks-1/2,0,1/2,1,0,1/1,1,3/2,30 JUN 2010,30 JUN 2010,fx_:=Sinx;gx_:=Cosx; Quxian=Plotfx,x,0,2Pi,PlotStyle-AbsoluteThickness3,Red; Quxian2=Plotgx,x,0,2Pi,PlotStyle-AbsoluteThickness3,Blue; Quyu=RegionPlotfxygx ,x,0,2Pi ,y,-1,1,PlotSty
11、le-Pink; Quyu2=RegionPlotfxGreen; ShowQuyu,Quyu2,Quxian,Quxian2,PlotRange-All,Axes-Automatic,AspectRatio-1,Frame-False,Ticks-0,Pi/2,Pi,3Pi/2,2Pi,-1,0,1,fx_:=SinPi x Exp-(x-1)2;gx_:=4Cosx-2; Quxian=Plotfx,x,0,4,PlotStyle-AbsoluteThickness3,Red; Quxian2=Plotgx,x,0,4,PlotStyle-AbsoluteThickness3,Blue;
12、Quyu=RegionPlotfxGreen; ShowQuyu,Quxian,Quxian2,PlotRange-All,Axes-Automatic,AspectRatio-1,Frame-False,Ticks-1,0,1,2,3,4,-3,-2,-1,0,1,2,3,4,30 JUN 2010,30 JUN 2010,fx_:=x;gx_:=x3; Quxian=Plotfx,x,-1.2,1.2,PlotStyle-AbsoluteThickness3,Red; Quxian2=Plotgx,x,-1.2,1.2,PlotStyle-AbsoluteThickness3,Blue;
13、Quyu=RegionPlotfxygx,x,-1.2,1.2,y,-1,1,PlotStyle-Pink; Quyu2=RegionPlotfxGreen; ShowQuyu,Quyu2,Quxian,Quxian2,PlotRange-All,Axes-Automatic,AspectRatio-1.2,Frame-False,Ticks-1,-1/2,0,1/2,1,-1,-1/2,0,1/2,1,Y型区域,fy_:=Siny; Quxian=ParametricPlotfy,y,y,0,Pi,PlotStyle-AbsoluteThickness3,Red; Quyu=RegionPl
14、otfyx0,x,0,1,y,0,Pi,PlotStyle-Green; ShowQuyu,Quxian,PlotRange-All,Axes-Automatic,AspectRatio-1.7,Frame-False,Ticks-0,1/2,1,0,Pi/2,Pi,30 JUN 2010,fy_:=12 (y2-y3); Quxian=ParametricPlotfy,y,y,0,1,PlotStyle-AbsoluteThickness3,Red; Quyu=RegionPlotfyx0,x,0,5,y,0,1,PlotStyle-Green; ShowQuyu,Quxian,PlotRa
15、nge-All,Axes-Automatic,AspectRatio-0.7,Frame-False,Ticks-0,1,2,0,1/2,1,30 JUN 2010,fy_:=y2/2;gy_:=y4/4-y2/2; Quxian=ParametricPlotfy,y,y,0,2.3,PlotStyle-AbsoluteThickness3,Red; Quxian2=ParametricPlotgy,y,y,0,2.1,PlotStyle-AbsoluteThickness3,Blue; Quyu=RegionPlotfyxgy,x,-1/2,2,y,0,2.3,PlotStyle-Green
16、; ShowQuyu,Quxian,Quxian2,PlotRange-All,Axes-Automatic,AspectRatio-0.7,Frame-False,Ticks-0,1,2,0,1,2,30 JUN 2010,fy_:=y2+1;gy_:=y4+1/2; Quxian=ParametricPlotfy,y,y,0,1,PlotStyle-AbsoluteThickness3,Red; Quxian2=ParametricPlotgy,y,y,0,1,PlotStyle-AbsoluteThickness3,Blue; Quyu=RegionPlotfyxgy,x,-1/2,2,y,0.4,0.8,PlotStyle-Green; ShowQuyu,Quxian,Quxian2,PlotRange-All,Axes-True,AxesOrigin-0,0,AspectRatio-1,Ticks-0,1,2,0,1/2,1,Frame-False,30 JUN 2010,fy_:=Siny;gy_:=(1-y) y+1; Quxian=Parametri
