matlab关于conv函数求解?

问题描述:

matlab关于conv函数求解?
x(n)=[3,11,7,0,-1,4,2],-3

>> x=[3,11,7,0,-1,4,2];
>> h=[2,3,0,-5,2,1];
>> conv(x,h)
ans =
6 31 47 6 -51 -5 41 18 -22 -3 8 2
-4≤n≤7