Źródło TeX:

= \left[ \dfrac{\infty}{\infty} \right]\overset{\text{H}}{=} \lim\limits_{x\to +\infty }\,\dfrac{(3x)'}{(2e^{x^2})'} = \lim\limits_{x\to+ \infty }\,\dfrac{3}{4x\,e^{x^2}} = \left[ \dfrac{3}{\infty} \right] = 0