MATLAB: How to plot this equation y=exp(-(K-1))

doit4meMATLABplotting

I want to plot the equation y=exp(-(K-1)) in matlab..can anyone help me please

Or, simply plot your function, like:

K = linspace(0,10,100);
y = exp(-(K-1));
plot(K,y);

Is this what you want:

k = 2;
y = linspace(-3,3,500);
i = sqrt(-1);
Y=2*exp(-k*y).*exp(-i*k*y); 
realy = real(Y);
imagy = imag(Y);
plot(realy, imagy, 'b*-');
grid on;

syms y(t)
eq=diff(y,2)+13*diff(y)+40*y==4;
Dy=diff(y);
Y(t)=dsolve(eq,[y(0)==0 Dy(0)==0])
t=0:0.001:0.9;
plot(t,Y(t))