matlab求高次多项式特征根问题是这样一个8次多项式 a8*x^8+a6*x^6+a4*x^4+a2*x^2+a0=0的特征根a8=-8.819090810000000e+020a6=2.586763062500001e+020a4 =-1.114365640400000e+021a2 =1.293781701000000e+021a0=-3.529165799999999e+020vv=[a 0

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