syms t taw;
%t=-2:0.01:10;
y1= heaviside(t-taw-5.5)-heaviside(t-taw-8.5);
y2= (exp(-2*taw)- 5*exp(-10*taw)).* heaviside(taw);
xlabel("time (t)"), ylabel("X(t)");
title("gragh A");
convulution= int(y1*y2, taw, -inf, inf);
fplot(convulution,[-1 11]);
legend('y1')