Question

I want to seperate a rational function to num and denom:
i.e x*y/(2*z) ===> n = x*y d = 2*z

here is my code:

func = input('Enter the function: ');
[n d] = numden(func);
disp(n);

>> test
Enter the function: x*y/(2*z)
??? Error using ==> input
Undefined function or variable 'y'.

Error in ==> test at 1
func = input('Enter the function: ');

Answer 1

You have to use symbolic objects.

>> syms x y;     
>> [n d] = numden(x*y/(x+y))

n =

x*y


d =

x + y

>>