MATLAB: I need to factor a symbolic polynomial for example x^2-1

factorsymbolicSymbolic Math Toolbox

i need an example of how to use the symbolic factor of matworks. if you can tell me how to factor x^2-1 i can take it from there

thank you

david

Just define x as symbolic variable and use factor() for your polynomial.

This plots the real part of y against x:

syms x y
ezplot(y-x^2-1i-2)

Of course, it looks just the same as

syms x y
ezplot(y-x^2-2)

EDIT: For a 3D plot, you could do this:

syms x
ezplot3(x,x^2+2,1)
xlabel('x')
ylabel('Real(y)')
zlabel('Imag(y)')

syms x
evalin(symengine, 'irreducible', x^2 - 2)