【简答题】翻译句子:Wind blowing across the suce of a body of water produces waves. The wave height depends upon the amount of energy transferred to the water and therefore increases with wind velocity(速度), the t...
【简答题】手写翻译下面内容 China’s novel coronavirus outbreak has forced millions of parents across China to share space with their children schooling from home as campuses from the elementary to university level exten...
【简答题】幂函数y=(m 2 -m-1)?x -5m-3 ,当x∈(0,+∞)时为减函数,则实数m的值为 ______.
【单选题】当x∈(0,+∞)时,幂函数y=(m 2 -m-1) 为减函数, 则实数m的值为( )
【单选题】幂函数 y=( m 2 -m-1) x m 2 -2m-3 当x∈(0,+∞)时为减函数,则实数m值为( )
【单选题】当x∈(0,+∞)时,幂函数y=(m 2 -m-1)x -m-1 为减函数,则实数m=( )
【单选题】当x∈(1,+∞)时,幂函数y=x α 的图象恒在y=x的下方,则α的取值范围是( )