作业帮Matlab程序应该没错啊,但是老是运行不出来,提示：Error in conv (line 39) c = conv2(a(:),b(:),shape)程序如下N=20;n=0:N-1;x=[(n>=3)>=0];a=[1 -0.7 0];b=[2 0 -1];hn=impz(b,a,n);y=conv(x,hn);stem(y,'filled')
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![Matlab程序应该没错啊,但是老是运行不出来,提示：Error in conv (line 39) c = conv2(a(:),b(:),shape)程序如下N=20;n=0:N-1;x=[(n>=3)>=0];a=[1 -0.7 0];b=[2 0 -1];hn=impz(b,a,n);y=conv(x,hn);stem(y,'filled')](/uploads/image/z/14806783-55-3.jpg?t=Matlab%E7%A8%8B%E5%BA%8F%E5%BA%94%E8%AF%A5%E6%B2%A1%E9%94%99%E5%95%8A%2C%E4%BD%86%E6%98%AF%E8%80%81%E6%98%AF%E8%BF%90%E8%A1%8C%E4%B8%8D%E5%87%BA%E6%9D%A5%2C%E6%8F%90%E7%A4%BA%EF%BC%9AError+in+conv+%28line+39%29+c+%3D+conv2%28a%28%3A%29%2Cb%28%3A%29%2Cshape%29%E7%A8%8B%E5%BA%8F%E5%A6%82%E4%B8%8BN%3D20%3Bn%3D0%3AN-1%3Bx%3D%5B%28n%3E%3D3%29%3E%3D0%5D%3Ba%3D%5B1+-0.7+0%5D%3Bb%3D%5B2+0+-1%5D%3Bhn%3Dimpz%28b%2Ca%2Cn%29%3By%3Dconv%28x%2Chn%29%3Bstem%28y%2C%27filled%27%29)
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Matlab程序应该没错啊,但是老是运行不出来,提示：Error in conv (line 39) c = conv2(a(:),b(:),shape)程序如下N=20;n=0:N-1;x=[(n>=3)>=0];a=[1 -0.7 0];b=[2 0 -1];hn=impz(b,a,n);y=conv(x,hn);stem(y,'filled')
Matlab程序应该没错啊,但是老是运行不出来,提示：Error in conv (line 39) c = conv2(a(:),b(:),shape)
程序如下
N=20;
n=0:N-1;
x=[(n>=3)>=0];
a=[1 -0.7 0];
b=[2 0 -1];
hn=impz(b,a,n);
y=conv(x,hn);
stem(y,'filled')
Matlab程序应该没错啊,但是老是运行不出来,提示：Error in conv (line 39) c = conv2(a(:),b(:),shape)程序如下N=20;n=0:N-1;x=[(n>=3)>=0];a=[1 -0.7 0];b=[2 0 -1];hn=impz(b,a,n);y=conv(x,hn);stem(y,'filled')
N=20;
n=0:N-1;
x=double([(n>=3)>=0]);
a=[1 -0.7 0];
b=[2 0 -1];
hn=double(impz(b,a,n));
y=conv2(x,hn);
stem(y,'filled')
看看这个是不是你需要的.