qiuzhongheliaoxiaozhishu2.m

signal and system answer

clear
a=[5/15,9/15,12/15,14/15,1];
yi=[0.354189646	0.028487735	0.021979361	-0.008774584 -0.10593518];
er=[0.527611325	0.253850138	0.118878526	-0.118073573 -0.206968022];
san=[1.134692038	0.722680772	0.61921056	0.44031927	1.192754286];
si=[1.637465569	1.461587091	0.900125179	0.544339372	0.39250894];
yy=a.*yi;
aa=sum(yy);
ee=a.*er;
bb=sum(er);
ss=a.*san;
cc=sum(ss);
gg=a.*si;
dd=sum(gg);