From graph of the rational function, you must define in .
(I'm assuming both x-axis and y-axis are crossed at )
I start with this set-up: (because of )
(because at the function cross the x-axis and is equal to zero)
(because pole of the function is at ).
So it comes down to 4 equations with 4 unknown variables, but I've tried many times solving, and I constantly get trapped in loop (you know, where your "new" equation is actually some old ones mixed up?)!!
Where is the flaw in my logic?