MATLAB: Newton-Raphson for fractional space-time equations

fractional space-time equationsMATLABnewton raphson

Hi! I'm new. I need MATLAB code for Newton-Raphson for fractional space-time equations. Any suggestions?

i suggest you take a look at this: https://www.mathworks.com/matlabcentral/answers/107508-solving-a-nonlinear-equation-using-newton-raphson-method

In Newton loops you must evaluate your f and j and currently guessed iterate, so your line

h = -f(x0(1),x0(2),x0(3))*j(x0(1),x0(2),x0(3));

should rather look like (using your notation)

h = -f(xval(1),xval(2),xval(3))*j(xval(1),xval(2),xval(3));

so you will need a statement at the top to initialize xval to x0