• 2022-06-19
    计算曲线积分[img=311x48]18033d3fe03444f.png[/img],其中曲线L的参数方程为[img=294x27]18033d3febe5fe6.png[/img]
    A: [img=36x22]18033d3ff41a516.png[/img]
    B: [img=27x22]18033d3ffca0119.png[/img]
    C: [img=27x46]18033d40046c527.png[/img]
    D: [img=27x46]18033d400ccb150.png[/img]