设,f(x)可导,且f(0)=0,F(x)=∫ t^(n-1) f(x^n-t^n)dt (下限是0,上限是x),求,limF(x)/x^2n (x趋于0时)下面是我做的请大家帮着看看令,u=x^n-t^n,则,du = - nt^(n-1)dtt属于(0,x),则t^n属于(0,x^n),-t^n属于(-x^n,0
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