计算积分[img=74x52]1803073019d45d7.png[/img]的近似值应使用的语句是 A: Integrate[Exp[x^2],{x,-2,2}] B: Nintegrate[Exp[x^2],{x,-2,2}] C: NIntegrate[Exp[x^2],x] D: NIntegrate[Exp[x^2],{x,-2,2}]
计算积分[img=74x52]1803073019d45d7.png[/img]的近似值应使用的语句是 A: Integrate[Exp[x^2],{x,-2,2}] B: Nintegrate[Exp[x^2],{x,-2,2}] C: NIntegrate[Exp[x^2],x] D: NIntegrate[Exp[x^2],{x,-2,2}]
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}}]
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}}]
1