subplot(6,2,1)
t=linspace(0,5,100);
x1=1+(5/(2*sqrt(1.2^2-1))*((exp(-(((1.2+sqrt(1.2^2-1))*5)*t))/((1.2+sqrt(1.2^2-1))*5))-(exp(-(((1.2-sqrt(1.2^2-1))*5)*t))/((1.2-sqrt(1.2^2-1))*5))))
plot(t,x1)
grid

subplot(6,2,3)
t=linspace(0,2,10);
x2=1-(exp(-5*t).*(1+5*t));
plot(t,x2)
grid

subplot(6,2,5)
t=linspace(0,10,100);
x3=1-(exp(-.1*5*t).*((cos(5*sqrt(1-.1^2)*t)+(.1/sqrt(1-.1^2)*sin(3*t)))));
plot(t,x3)
grid

subplot(6,2,7)
t=linspace(0,5,100);
x4=1-(cos(5*t));
plot(t,x4)
grid

subplot(6,2,9)
t=linspace(0,5,100);
x5=-50/399*i*399^(1/2)*(exp(-(-1/4-1/4*i*399^(1/2))*t)-exp(-(-1/4+1/4*i*399^(1/2))*t));
plot(t,x5)
grid

subplot(6,2,11)
t=linspace(0,5,100);
x6=-50*exp(1/2*t)+50*exp(t)
plot(t,x6)
grid