Question

valendo 60 pontos para quem resolver

Answer 1

$\mathsf{\underset{x\to +\infty}{\ell im}~\dfrac{-4x^5+x+3}{3x^3+5x^2+x+2}}\\\\\\ \mathsf{=\underset{x\to +\infty}{\ell im}~\dfrac{x^3\cdot \left(-4x^2+\frac{1}{x^2}+\frac{3}{x^3}\right)}{x^3\cdot\left(3+\frac{5}{x}+\frac{1}{x^2}+\frac{2}{x^3}\right )}}\\\\\\ \mathsf{=\underset{x\to +\infty}{\ell im}~\dfrac{-4x^2+\frac{1}{x^2}+\frac{3}{x^3}}{3+\frac{5}{x}+\frac{1}{x^2}+\frac{2}{x^3}}}\\\\\\ \mathsf{=\underset{x\to +\infty}{\ell im}~\dfrac{-4x^2}{3}}\\\\\\ \mathsf{=\underset{x\to +\infty}{\ell im}~\left(-\dfrac{4}{3}\right )\!x^{2}}\\\\\\ =-\infty$

Answer 2

Como assim foto não entendi ai ai