计算下列卷积和[tex=7.357x1.357]I7a0PHsrNEvRGWFJd/K9lPWtVdrR2SbmNNydccffnCI=[/tex]。[tex=11.5x1.5]/ng+TBa6n72QxH7VX07xSsLKRxuCH4/bBG2EMAVfxErBjcSddMIfBRitKeLMFZ+p+qHyfiHbimV0mSeK722UrA==[/tex]
举一反三
- 计算下列卷积和[tex=7.357x1.357]I7a0PHsrNEvRGWFJd/K9lPWtVdrR2SbmNNydccffnCI=[/tex]。[tex=12.286x1.5]edRbDlP0JOhsV1G6tYzXZhS2HCSy89QqigiRdDK2/2dR0QTGuem772s/JU5oSy2TApn2yPKS+vm32htGk+wjSA==[/tex]
- 计算下列卷积和[tex=7.357x1.357]I7a0PHsrNEvRGWFJd/K9lPWtVdrR2SbmNNydccffnCI=[/tex]。[tex=14.357x1.5]edRbDlP0JOhsV1G6tYzXZhS2HCSy89QqigiRdDK2/2dR0QTGuem772s/JU5oSy2TWNVllIuaPr8WXkVSVnq8vQ==[/tex]
- 各序列图形如题图所示,试求:若[tex=7.357x1.357]I7a0PHsrNEvRGWFJd/K9lPWtVdrR2SbmNNydccffnCI=[/tex], 则[tex=4.786x1.357]LVLPMShTdN08+77sRin3mA==[/tex]和[tex=1.786x1.357]iXt6DDo9spV6GqObEkiNeg==[/tex]各是多少?
- 以下程序的输出结果是() main( ) { int i , x[3][3]={9 , 8 , 7 , 6 , 5 , 4 , 3 , 2 , 1} , *p=&x[1][1] ; for(i=0 ; i<4 ; i+=2) printf("%d " , p[i]) ;
- 采用基2时间抽取FFT算法流图计算8点序列的DFT,第一级的数据顺序为 A: x[0],x[2],x[4],x[6],x[1],x[3],x[5],x[7] B: x[0],x[1],x[2],x[3],x[4],x[5],x[6],x[7] C: x[0],x[4],x[2],x[6],x[1],x[5],x[3],x[7] D: x[0],x[2],x[1],x[3],x[4],x[6],x[5],x[7]