matlab中提示The length of X must match the number of rows of Y答:clear all;close all;clc;k=6;a=[1 3 2];b=[1];[h t]=impz(b,a,k);[g t]=stepz(b,a,k);subplot(2,1,1);stem(t,h);grid on;title('h[t]');xlabel('t');ylabel('h');subplot(2,1,2);stem(t,g);grid on;title('g[t]');xlabel('t');ylabel('g');按上面...