Salutare
[tex]\lim_{x \to 0 } \frac{sin^{2}4x }{8x^{2} } \\\\ \lim_{x \to 0} \frac{sin4x*sin4x}{8*x*x } \\\\ \lim_{x \to 0} \frac{2}{2}\frac{sin4x*sin4x}{8*x*x} \\\\ \lim_{x \to 0} \frac{2*sin4x*sin4x}{16*x*x}\\\\ \lim_{x \to 0} \frac{2*sin4x*sin4x}{4x*4x}\\\\\\ 2*\lim_{x \to 0} \frac{sin4x}{4x}* \lim_{x \to 0} \frac{sin4x}{4x}\\\\\\\\2*1*1=2[/tex]