҂ƽr܇ʹ^ҪMİl(f)һF(xin)rҲҪ^ھoo̎܇@oҽBһ҂ʹһЩl(f)̎Ԯķ
҂l(f)]Ӱ푾Ҫ_Jһ܇ӵĠr{ҪܴAӆĵԒ֪ͨԮԮˆTԒc(lin)ϵǽͨ¹ʵİl(f)Ҫ֪ͨܲT̎(j)һ¹؟ж@¹؟жDZUr(j)Ȼ߀Ҫ֪ͨ܇˾cU˾f(xi)̎톖}
҂F(xin)ĕrҪCľԼȫҪeO̎ͨ¹¹ʑԓҪrψrUrF(xin)}
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