PDA

View Full Version : sat math Functions



Oliver
10-26-2013, 04:59 AM
The function f(x)=\frac{x+3}{ x^2-5x+6} is not defined when x is equal to?

(A) 3

(B) -3

(C) -2

(D) 0

Thanks!;)

nicole
10-26-2013, 04:59 AM
The function is undefined when the value of the denominator is equal to zero. The roots of the quadratic equation x^2-5x+6 =0 are x=2 \ or \ x=3.

Therefore the correct answer is (A).

Hope these help!!;)

Oliver
10-26-2013, 05:00 AM
Thanks for your quick response!;)