‏计算两个球面[img=304x27]180307312a367fd.png[/img]相交部分的体积应使用‌ A: Integrate[Boole[[img=127x26]1803073131e65ec.png[/img]&[img=176x27]180307313afdea8.png[/img],{x,-2,2},{y,-2,2},{z,-2,4}] B: Integrate[Boole[[img=127x26]1803073131e65ec.png[/img],[img=176x27]180307313afdea8.png[/img],{x,-2,2},{y,-2,2},{z,-2,2}] C: Integrate[[img=127x26]1803073131e65ec.png[/img]&&[img=171x27]180307315ff3643.png[/img],{x,-2,2},{y,-2,2},{z,-2,4}] D: Integrate[Boole[[img=127x26]1803073131e65ec.png[/img]&&[img=176x27]180307313afdea8.png[/img],{x,-2,2},{y,-2,2},{z,-2,4}]

计算两个球面[img=304x27]1803073024bb011.png[/img]相交部分的体积应使用 A: Integrate[Boole[[img=127x26]180307302d73063.png[/img]&[img=176x27]18030730359dd70.png[/img],{x,-2,2},{y,-2,2},{z,-2,4}] B: Integrate[Boole[[img=127x26]180307302d73063.png[/img],[img=176x27]18030730359dd70.png[/img],{x,-2,2},{y,-2,2},{z,-2,2}] C: Integrate[[img=127x26]180307302d73063.png[/img]&&[img=171x27]180307305786c45.png[/img],{x,-2,2},{y,-2,2},{z,-2,4}] D: Integrate[Boole[[img=127x26]180307302d73063.png[/img]&&[img=176x27]18030730359dd70.png[/img],{x,-2,2},{y,-2,2},{z,-2,4}]

‏计算二重积分[img=159x48]18030731271aaff.png[/img], D 是单位圆盘[img=89x26]180307312f6708b.png[/img],应使用的语句是‍ A: Integrate[Sqrt[x^2+y^2 ], {x^2+y^2≤1}] B: Integrate[Sqrt[x^2+y^2 ]Boole[x^2+y^2≤1],{x,-1,1},{y,-1,1}] C: NIntegrate[Sqrt[x^2+y^2 ]Boole[x^2+y^2≤1],{x,-1,1},{y,-1,1}] D: Integrate[Sqrt[x^2+y^2 ],{x^2+y^2≤1,{x,-1,1},{y,-1,1}}]