I am studying convolution from book of alex palamides but i am confused because he uses time step(in this case 0.01) in his code for continuous convolution as shown highlighted in attached photo but he does not uses step when he perform discrete convolution
Here is his code from book for discrete convolution
% Discrete time convolution
% x=[1,2,3,4,5],0<=n<=4
% h=[1,2,1],-1<=n<=1
n=-1:4;
x=[0,1,2,3,4,5];
h=[1,2,1,0,0,0];
subplot(121);
stem(n,x);
axis([-1.1 4.1 -.1 5.1]);
legend('x[n]')
subplot(122);
stem(n,h);
axis([-1.1 4.1 -.1 5.1]);
legend('h[n]')
figure
y=conv(x,h);
stem(-2:8,y)
axis([-2.5 8.5 -.5 16.5]);
legend('y[n]')