若f(x)存在二阶导数,求函数y=f(lnx)的二阶导数.
参考答案:
解析:
[分析]: 这是轴象函数的求导问题,而f(lnx)又是复合函数,所以应用复合函数的求导公式来计算.
That tests can actually give measurement of the language skills of the students_______ by many teachers.
A.questioned
B.are questioned
C.is questioned
D.questioning
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