## anonymous one year ago What is the range of 3/x2-4

1. anonymous

@zzr0ck3r

2. zzr0ck3r

$$f(x) = \dfrac{3}{x^2}-4$$ ?

3. DecentNabeel

$\mathrm{Range\:of\:}\frac{3}{x^2}-4:\quad \begin{bmatrix}\mathrm{Solution:}\: & \:f\left(x\right)>-4\: \\\:\mathrm{Interval\:Notation:} & \:\left(-4,\:\infty \:\right)\end{bmatrix}$

4. anonymous

I think it's $\mathbb{R}-\left\{ -4 \right\}$ When f(x)=-4, we have $\frac{3}{x^2}-4=-4$ $\implies \frac{3}{x^2}=0$$\implies 3=0$ which is not true I'm not sure though