Respuestas sección 4.2

  1. $\hspace{0.1cm}\left(-\infty,4\right)$
  2. $\hspace{0.1cm}\left(-1,1\right)$
  3. $\hspace{0.1cm}\left(-\infty,4\right)\cup\left(3,\infty\right)$
  4. $\hspace{0.1cm}\left[3,4\right]$
  5. $\hspace{0.1cm}\left(-\infty,-1-\sqrt{2}\right]\cup\left[1-\sqrt{2},\infty\right)$
  1. $\hspace{0.1cm}\left(-\frac{7}{3},3\right)$
  2. $\hspace{0.1cm}\left(-2, \frac{5}{3}\right).$
  3. $\hspace{0.1cm}\left(-\infty,2\right)\cup\left(5,\infty\right)$
  4. $\hspace{0.1cm}\left[-2,1\right)\cup\left[3,\infty\right)$
  5. $\hspace{0.1cm}\left(-3,-2\right]$