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ii11hiV+卜k000IH-10000IHx-13-2IIIIII=an( _1)an dx( _,1)an _2x1)川 a2Xn'(-1)2n(x ajxn(-1)2nx00III00x-10III000x0III000x-1III00.+to11+ill+a2(-1)2ndi141+I-4H000川-10000llix000IIIx-1000III0-1-1000xn 3an...

III0,1, 2, 15分别画出X(ej°)、X32*)和X16*)的幅度谱,并绘图显示x(n)、X32(n)和.(n)的 波形,进行比... 13、6n=ifft(X16k,N/2); %16 点 IFFTX16(k)得至U x16(n)subplot(3,2,2);stem(n,xn,'.');box ontitle('(b)三...

6、.104范德蒙行列式11|X1X222X1X2Ii卜,n-1n-1|X1X2HI5特征多项式Xn2Xn4n-1XnXXj1 j i n1.11... 满足 A2 3A 2E 0,则 A E 1 .6 .设A100023000450006 7E为4阶单位矩阵,且7.设A, B均为三阶矩阵,...

X n(t°) = 0X;(t°) =0,X2(t°) =1川山 X n(t°) = 0IHIHIIIIHIHIIIHIIIHIIHIIIIIIIHIHIIII为心代0)= 0用-It。) = 0,川,X:T(t0)=1考虑 WXi(to),X2(t°)川 |,Xn(t。)二10III00 HI1 HIIII HI0III0 III 1从而Xj(t)(i 2|n)是线性无关的...

* *. .-10HI0-1III10III01III0 0 0、0 0 00 0 00 0 0(1(1) )解(1 1)HI10 -1III010HI-10122解(1)(1) f (x1, x2, x3) = 2x-i 3x2 10X1X2 16%X3 2x2x3 f ( 3、为,X2,X3)=2为X2 -4X1X3 -2X2X3nn _2 f X1,X2,|,Xn 严6 ...