Miscel·lània 2

1) \(\displaystyle \lim_{x \to -\infty} -3x+4\)	2) \(\displaystyle \lim_{x \to -\infty} \frac {x^2+x+1}{1-x}\)
3) \(\displaystyle \lim_{x \to \infty} \frac {9x^2+2}{-2x^3+x^2-4}\)	4) \(\displaystyle \lim_{x \to \infty} \left ( \frac 1 3 \right )^{-x^2}\)
5) \(\displaystyle \lim_{x \to 1} \frac {x+1}{x^3-2x+1}\)	6) \(\displaystyle \lim_{x \to -\infty} \frac {-3x^4+x^3}{2x^3}\)
7) \(\displaystyle \lim_{x \to -\infty} 8x^3+2x^2+x\)	8) \(\displaystyle \lim_{x \to 0} \frac {x+1} x\)
9) \(\displaystyle \lim_{x \to 3} 2^{x-2}\)	10) \(\displaystyle \lim_{x \to \infty} \log_2 (x^2+x+2)\)