【单选题】Parenteral bethanechol chloride is prescribed for a client with urinary retention. The nurse should plan to administer this medication by which route?
【简答题】求下列函数的导数: (1)y=sin3x; (2) 。
【单选题】We consider it necessary()tom should improve his behavior.
【简答题】求下列函数的导数: (1)y= ; (2)y=sin 2 (2x+ ); (3)y=x .
【单选题】His behavior. _______ his lazy attitude toward to work.
【判断题】I observe frequently his behavior.
【简答题】He was loud and angry, and his friends told him to _____his behavior. A) modify B) convert C) transform D) differ
【简答题】(1)求函数 y= x+3 x 2 +3 的导数 (2)已知 f(x)= x 3 +4cosx-sin π 2 ,求f'(x)及 f′( π 2 ) .