A cura di: Administrator

Forma indeterminata: $0cdotinfty$

$lim_{xrightarrow 0} xcdot cot(2x) = lim_{xrightarrow 0} Big(frac{cos(2x)}{sin(2x)}cdotfrac{2x}{2}Big)= lim_{xrightarrow 0} Big(frac{cos(2x)}{2}cdotfrac{1}{frac{sin(2x)}{2x}}Big)= frac{1}{2}$