!! used as default html header if there is none in the selected theme. OEF 定积分

# OEF 定积分 --- 介绍 ---

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### 定积分与面积 1

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xrange -2, yrange , hline 0,0,black vline 0,0,black line 0,,1,,yellow trange 0, plot black,t, trange -2, line 1,,1,,black dline 1,,1,,black line 0,,0,,black text black,-0.2,-0.2,medium,0 text black,0.6,-0.2,medium,1 gridfill ,*4/5,5,5, gridfill /2,*4/5,5,5, transparent yellow

### 定积分与面积 2

Soit . 计算 .

xrange -0.2,4*pi yrange -*5/4,*5/4 hline 0,0,black vline 0,0,black plot black, gridfill pi/2,*4/5,10,10,blue gridfill 3*pi/2,*4/5,10,10,blue gridfill 5*pi/2,*4/5,10,10,blue gridfill 7*pi/2,*4/5,10,10,blue

• Description: 一组关于单变量定积分的练习 (理论及计算). This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
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