\({k +3 \over 2(k -3)}\) in my textbook, they got \(-{5 \over 2}\) and 3 and i don't know how they got that?

Guest Mar 15, 2018

#1**+1 **

Remember that we cant have any values that make a denominator = 0

So.... k cannot =3 because that makes the denominator 0

I don't know where they get -5/2......this functiion is certainly defined at k = -5/2

See the graph, here : https://www.desmos.com/calculator/hh4osmk1fc

I've substituted x for k, but the idea is still the same....

CPhill
Mar 15, 2018