A cura di: Administrator
Limite in forma indeterminata $+infty-infty$
$lim_{x rightarrow 1^+} (frac{1}{x^2-1} + frac{1}{x^2-3x+2})=$
$lim_{x rightarrow 1^+} [frac{1}{(x-1) (x+1)} + frac{1}{(x-1) (x-2)}] =$
$lim_{x rightarrow 1^+} frac{1}{x-1} cdot frac{x-2+x+1}{(x+1) (x-2)} =$
$lim_{x rightarrow 1^+} frac{1}{x-1} cdot frac{2x-1}{(x+1) (x-2)} = -infty$
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