3.2E: Dominio y Rango (Ejercicios)
- Page ID
- 112073
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20. \(f(x)=\frac{2}{3 x+2}\)
21. \(f(x)=\frac{x-3}{x^{2}-4 x-12}\)
22. \(f(x)=\frac{\sqrt{x-6}}{\sqrt{x-4}}\)
23. Grafique esta función por tramos:\(f(x)=\left\{\begin{array}{ll}x+1 & x<-2 \\ -2 x-3 & x \geq-2\end{array}\right.\)