【单选题】函数 在点 沿某方向 的方向导数最大,则方向 必为曲线 在点 处的( )
【单选题】函数 在点 处沿曲线 , , 在该点切线方向上的方向导数为( )
【单选题】在城市各种用地类型中,所占比例最多的用地类型是()。
【简答题】In a sudden ______ of anger,the man tore up ?In a sudden ______ of anger , the man tore up everything within reach. A) attack B) burst C) split D)
【判断题】设一曲线的参数方程为 ,则该曲线在对应于 的点处的切线的方向向量为 .
【简答题】In a sudden _____________ of anger, the man tore up everything within reach. A) attack B) burst C) split ...
【简答题】A.The man had his old car insured. B.The man was sad that his car was not smashed. C.The man was confident that his car was safe. D.The man never reads newspaper.
【简答题】“Man, car, anger” are independent of other morphemes, which are known as f________.
【单选题】在曲线 上点 处并沿该点切向的方向导数为( )