第10题: [单项选择]已知函数f(x)具有任意阶导数,且f'(x)=[f(x)]2,则当n为大于2的正整数时,f(x)的n阶导数f(n)(x)是______. A. n![f(x)]n+1 B. n[f(x)]n+1 C. [f(x)]2n D. n![f(x)]2n 参考答案:A 答案解析:[考点提示] 可先求出一阶、二阶、三阶导数,再找出一般性的规律. [解题分析] 由f'(x)=[f(x)]2,有 f"(x)=2f(x)f'(x)=2f(
第34题: [多项选择]One of the serious ______ of meteorology is that natural weather patterns cannot be in the laboratory for investigation. A. successes ... achieved B. weaknesses ... recreated C. advantages ... analyzed D. premises ... acknowledged 参考答案:B