How to plot a function graphically

I have an equation :

that I'd like to plot it. I have a graphical solution:

I will reproduce the plot where = 1/2pi (The orange curve).

I tried but I dont get the same plot:

clc
clear all

PEP0=-0.75:0.1:1.7;
n=1; 
v=[],

v =

     []

for i=1:length(PEP0)-1
    y=-0.2;
    v(1)=-0.2;
    y=PEP0(i)-(1/(2*pi))*sin(2*pi*(n-y));
  v(i+1)=y;
end
    


plot(PEP0,v','b')
grid on

Could someone please help me with that ?!

[Matt J]

Pouyan Msgn 9 minutes ago

I tried with one another:

clc
clear all

PEP0=-0.24:0.01:1.6;
n=4; 

for i=1:length(PEP0)-1
    y(1)=-0.36;
    
    y(i+1)=PEP0(i)-(1/(2*pi))*sin(2*pi*(n-y(i)));
  
end
plot(PEP0,y','b')
grid on

Why dont I get the same plot ?

Answer 1

[Matt J]

n=1;
fimplicit(@(x,y) y-x+(1/(2*pi))*sin(2*pi*(n-y)))
xlim([-0.5,1.5])
ylim([-0.2,1.2])