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src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbaaa31fe71b11e9eebc63cc25c873389.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F729a1faa1331e341486391abd275b3c8.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F24badbfb0ad6cbc1b972a5863100dafc.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F96bee90746786b62c4f1164d14e94e8f.webp\">","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],85486845,[36,37,38,39],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3cc8737be3e50dbc5095e557a112a0d4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7b585ae9ad288b9ebb814c7e3eb3573d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F405dc05890985f7486addcca50f5778e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7cae391dfa669177394600e4360b7600.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd64cc571e4f98a3efc854c4119d39959.png\">",{"answer":42,"createTime":5,"id":6,"options":43,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],85486847,[48,49,50,51],"2","3","1","0","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5073f151ebb9762dbf827d04cf10f599.png\">",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],85486848,[57,58,59,60],"10","5","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F10ced756396acb77eaad75c9cf7ff58d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F44addd038ad4e467a601313e030f1cf9.png\">","设二元函数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0ecab09d212b3f96ee2a867d9cde394c.png\">,则该函数在点\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F04ff99e5ab1322271d045fbcee471da7.png\">处沿方向\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c84cedc82ce6367d7da720b484f5ff0.png\">的方向导数为( )",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],85486849,[66,67,68,69],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb90d19eea88b4ca1177711073035ff36.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F06ac5c0348b8e1b687e6e7e5efc81d3b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F60c1e3182eda1e1ffc67f24b512c6bb1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0e7a2c01952cd47d17a99f5398c06d59.png\">","函数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7ba1a084996ac8519d374a769213ee1c.png\">在点(1,-1,1)处方向导数最大值为( )",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],85486850,[75,76,77,78],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fac8ccd03ce14a3f5d2d97851d6f2244c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F951eb877fd4a7ba435a9feb5023046fe.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5635b34826c1e98ba3a6e1f897d8ad59.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb992f9accae490b513a8cf5905d91fec.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7b5c145cfd18de2462149f75d3df9fcb.png\">",{"answer":81,"createTime":5,"id":82,"options":83,"question":87,"source":30,"type":31},[],85486851,[84,85,86,60],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fee31e08de9ded16547eaddf29d7618eb.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5e2b369b2e900357e8cb91e6da299600.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb3d537584c8e79e78d59f5dc9d7e7c65.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F67616fe80a0f232e137b7845f94df72a.png\">",{"answer":89,"createTime":5,"id":90,"options":91,"question":94,"source":30,"type":31},[],85486852,[92,51,93,50],"-1","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffafde7ffc551d96d1a576e919ca6ed6c.png\">","函数 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbcfd4c42a09746d1b9ebe6ab259cabb6.png\"> 在点\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1036dd2ae9c69d7ecb8fd5370719b9ce.png\"> 处沿 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9865b44027cc07d64183121222aabadf.png\"> 的方向导数为",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":30,"type":31},[],85486853,[99,100,101,102],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fec28daec64a2f4d0174bd88b77b19d8c.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F38c09f27d329600c0db76abe13e09c16.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F92a3478acd914d716d30ee3313ea82a3.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa61197ea767e58b89c331bc8d61c462a.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F825fa1ea8812d3e548791526bd8694b0.webp\">"]