limit as x approaches 1 of (120x^2)/(x^2+4)

解答

x \to 1 lim (\frac{120 x ^{2}}{x ^{2} + 4})

24

求解步骤

x \to 1 lim (\frac{120 x ^{2}}{x ^{2} + 4})

代入值

x = 1

= \frac{120 \cdot 1 ^{2}}{1 ^{2} + 4}

化简

= 24

x \to 0 + lim (\frac{6 csc ( x )}{cot ( x )})

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y \to 2 lim (ln (sin (\frac{π}{y})))

x \to \infty lim (\frac{6}{4})