limit as x approaches 3+of x/(x^2-9)

Lösung

x \to 3 + lim (\frac{x}{x ^{2} - 9})

\infty

Schritte zur Lösung

x \to 3 + lim (\frac{x}{x ^{2} - 9})

\frac{x}{x ^{2} - 9} = x \frac{1}{x ^{2} - 9}

= x \to 3 + lim (x \frac{1}{x ^{2} - 9})

x \to a lim [f (x) \cdot g (x)] = x \to a lim f (x) \cdot x \to a lim g (x)

mit Einschränkung des unbestimmten Ausdrucks

= x \to 3 + lim (x) \cdot x \to 3 + lim (\frac{1}{x ^{2} - 9})

x \to 3 + lim (x) = 3

x \to 3 + lim (\frac{1}{x ^{2} - 9}) = \infty

= 3 \cdot \infty

Wende die Unendlichkeitseigenschaft an:

c \cdot \infty = \infty

= \infty

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