find-the-real-values-of-x-for-which-the-function-f-x-x-2-x-2-3x-2-

Question Number 12495 by shardon last updated on 23/Apr/17

f i n d t h e r e a l v a l u e s o f x f o r w h i c h

t h e f u n c t i o n f (x) = \frac{x^{2}}{x^{2} + 3 x + 2}

Commented by mrW1 last updated on 23/Apr/17

t h e q u e s t i o n i s n o t c o m p l e t e!

Commented by shardon last updated on 23/Apr/17

y e s i t d o e s

Commented by mrW1 last updated on 23/Apr/17

w h a t i s y o u r q u e s t i o n t h e n ?

Answered by FilupS last updated on 24/Apr/17

f (x) = \frac{x^{2}}{x^{2} + 3 x + 2}

x \in R

x^{2} + 3 x + 2 \neq 0 \Rightarrow x \neq - 2, - 1

\forall x \in R ∖ {- 2, - 1} \Rightarrow f \in R

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