• 2022-07-29
    曲线[img=70x22]18034a51d5b3e56.png[/img]与x轴及直线[img=113x42]18034a51ded2a04.png[/img]所围区域的面积定积分表达式为[img=87x56]18034a51e787a94.png[/img]