How to separate an equation into several equations?

Hi there,

If I have an equation in Matlab for example in the form f(x)=(x+1)(2x+4), how can I seperate it into two equations of the following forms: g(x)=(x+1), h(x)=(2x+4). Your help would be much appreciated.

Thank you.

Answer 1

[Image Analyst]

Help with what? What do you want? two functions, or two array? For array, do this

    fx = (x+1) .* (2*x+4);
    hx = 2*x+4;
    gx = x+1;
    fx = gx .* hx; % Version using gx and hx.

For functions you just do

function out = g(x)
  out = x+1;

function out = h(x)
  out = 2 * x + 4;

If that's not what you want, then explain better.

[Ramy]

I'm sorry for my bad explanation. What I meant is that I don't know what these functions are. For example it could be f=(x+1)(x-2) or f=(2x+1)(x-4). It could be any combination of functions.

To put it better, is there any way in matlab to separate parts of a big equation to smaller equations?

[Image Analyst]

Well you have to know what the original function is. But, are you asking how to symbolically factorize an nth order polynomial into a polynomial of x and a polynomial of order (n-1)? Or into a whole bunch of lower order polynomials? I don't know how to do that, but I'll add tags so that maybe someone else will answer.