How to plot system of fractional delay differential equations

Let us consdier the system of fractional order delay differential equation

D^[alpha} x(t)= a*x(t) ( 1- x(t)/k ) - (b* x(t)* y(t-tau) ) / ( 1+c* x(t) );

D^[alpha} y(t)= ( b* x(t)* y(t-tau) ) / ( 1+c* x(t) )-d y(t);

tau=0.5; a=1; k=2; b=0.5; c=1.5; [x(t), y(t)]=[2,1] for all t in [-0.5, 0].

How to plot the above system?

[ahlam inas]

Hi, please I want the code of this system in matlab?

[ENEL]

Hi, please I want the matlab code too.

[Sumati Kumari]

Hello, I would also like the Matlab code.

Answer 1

[wang zhiming]

I set a=1, k=2, b=0.5, c=1.5, d=1.2, and alpha=0.95, then get the following plot. Is it right?

[RAMESH P]

Dear wang zhiminga

Your plot is correct. What is the value of ''alpha''. Could you give the mathlab code for the same. Thanking you sir.

[fatima cherkaoui]

Dear wang zhiminga

Can you give me also the mathlab code for the same model please.

[iffah]

i want the code too, can you send to me?

Answer 2

[wang zhiming]

The alpha value is the order of your equations. About the matlab code you can read the paper: A PREDICTOR-CORRECTOR SCHEME FOR SOLVING NONLINEAR DELAY DIFFERENTIAL EQUATIONS OF FRACTIONAL ORDER. SACHIN BHALEKAR, VARSHA DAFTARDAR-GEJJI.

[RAMESH P]

Dear wang zhiming

I have read the article ''A PREDICTOR-CORRECTOR SCHEME FOR SOLVING NONLINEAR DELAY DIFFERENTIAL EQUATIONS OF FRACTIONAL ORDER''. I have some confusion on ploting the system of equation. Please send me the matlab code for the same. Otherwise give your mail id sir. I will explian my dobuts detailly via mail. My mail id is '' []@gmail.com''

[Sumati Kumari]

HIi, Ravi.

Hope you succeeded in getting MatLab code for fractional delay differential equations. Please let me know the code. I tooo strugling for Matlab code.