[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fqjlRZVPTw9v4-TmUMJZa-53ejYqmkjbI_0HcXGp9cp0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":29,"type":30},[],"2025-04-13 20:04:28",182877026,[8,9,10,11],"旋转曲面的旋转轴总是直线","旋转曲面的纬线和经线都是平面曲线","旋转曲面的纬线所在的平面总是垂直于旋转轴","旋转曲面的经线所在的平面总是垂直于旋转轴",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":16},50,"c73fc176b0e6891ac4564cea4478e336","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbb062ff6068e05b64e1dc4486da29b2a.jpg","高等数学2","exam_152438167","下列关于旋转曲面的陈述中不正确的是()",[20,31,40,49,52,61,70,79,88,96],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],182877021,[24,25,26,27],"symxy","symx,y","symsx,y","symsxy","在MATLAB中,能正确的把x,y定义成符号变量的指令是()","v1",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],182877022,[35,36,37,38],"一","两","无穷多","无法确定","在直线上,以任一点为起始点的单位向量一共有()个",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":29,"type":30},[],182877024,[44,45,46,47],"f'(sinx)dx","[f(sinx)]'d(sinx)","cosxdx","f'(sinx)cosxdx","设f(u)为可微函数,若y=f(sinx),则dy=()",{"answer":50,"createTime":5,"id":6,"options":51,"question":18,"source":29,"type":30},[],[8,9,10,11],{"answer":53,"createTime":5,"id":54,"options":55,"question":60,"source":29,"type":30},[],182877029,[56,57,58,59],"方程中未知函数的最高阶数","方程中未知函数导数或微分的最高阶数","方程中未知函数的最高次数","方程中函数的次数","微分方程的阶数是指()",{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":29,"type":30},[],182877031,[65,66,67,68],"收敛级数的各项乘以常数c所得的级数也收敛","收敛级数可逐项相加或相减","在级数前面加上或去掉有限项,不会影响级数的敛散性,也不会改变级数的和函数","收敛级数加括弧后所成的级数仍收敛于原级数的和","下列说法错误的是()",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":29,"type":30},[],182877034,[74,75,76,77],"拉普拉斯","莱布尼兹","笛卡尔","牛顿","数学家()首次引入直角坐标系来用代数方法研究平面几何问题",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":29,"type":30},[],182877037,[83,84,85,86],"充分非必要","必要非充分","充要","无关","一元函数可微是可导的()条件",{"answer":89,"createTime":5,"id":90,"options":91,"question":69,"source":29,"type":30},[],182877039,[92,93,94,95],"平面不是开区域","如果一个区域内任意两点之间的距离都不超过某一正数M,则该区域称为有界区域","包括边界在内的区域称为闭区域","不包括边界在内的区域称为开区域",{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":29,"type":30},[],182877040,[100,101,102,103],"最大值一定比最小值大,极大值一定比极小值大","极大值一定是函数的最大值,极小值一定是函数的最小值","若二元函数在区域内只有一个极值,则极大值就是最大值,极小值就是最小值","函数的极值点与最值点都是区域内的驻点","关于多元函数的极值与最值,以下说法正确的是()"]