$\lim_{x \rightarrow \pi} \frac{1+\cos x}{(x-\pi)^2}$

A cura di: Administrator

Limite in forma indeterminata $frac{0}{0}$

$lim_{x rightarrow pi} frac{1+cos x}{(x-pi)^2} = text{[posto } x-pi = ttext{]} = lim_{t rightarrow 0} frac{1-cos t}{t^2} = frac{1}{2}$