impulse response for this problem

how can i obtain the impulse response and the plot: y(n)=x(n)-0.6y(n-1),for y(-1)=0

and n=[-2:10]

i tried to understand it from the explanation provided on mathworks but it seems it is hard for a beginner

thank you for the help

[Birdman]

What is x(n)?

[ahmed allaheani]

x(n) is the impulse input

[Birdman]

So, is it always 1?

[ahmed allaheani]

no, the n value change from -2 to 10 in steps of 1

[Torsten]

Birdman means x, not n.

[ahmed allaheani]

x(n) value is 1 at zero, and zero elsewhere

[ahmed allaheani]

i mean if i plot(n,x) then x=1 when n=0, anywhere else it will be zero. a delta function

Answer 1

[ahmed allaheani]

i got some help from an expert, and this is the solution:

n=[-2:10];% time vector

x=n==0; % impulse input

y=n==-1;% output array with initial condition

x=double(x);

y=double(y);

for i=2:length(n)

    y(i)=x(i)-0.6*y(i-1) % system equation

end

stem(n,y); % output plot

axis([-2 10 -2 2]);

title('output');