2014年江苏高考数学卷第26题怎么做才好?真的很难啊,不愧是压轴题.已知函数f0(x)=sinx/x,(x>0),设fn(已知函数f0(x)=sinx/x,(x>0),设fn(x)为fn-1(x)的导数,n属于N *,(1)求2f1(π/2)+(π/2)f2(π/2)的值;(2)证明:对

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