What exactly are you asking?
f(x)= (x^2 - 1) / (x - 1) if x<1
= ax^2 - bx + 1 if 1 <= x < 3
= 4x - a + b if x => 3
find a and b
all i know so far is that you must use a limit as x approaches 1 in the first equation to get 2
then where should i go?
thank you for your help
1 + 1 = a - b + 1
a(3)^2 - b(3) + 1 = 4(3) - a + b
And since your deadline suggests that this is assignment that in all likelihood counts towards you final grade and is therefore meant to be your own work, the thread is now closed.