limit as x approaches 2 of 2x^3+4e^x

解答

x \to 2 lim (2 x^{3} + 4 e^{x})

16 + 4 e^{2}

十进制

45.55622 \dots

求解步骤

x \to 2 lim (2 x^{3} + 4 e^{x})

代入值

x = 2

= 2 \cdot 2^{3} + 4 e^{2}

化简

2 \cdot 2^{3} + 4 e^{2} : 16 + 4 e^{2}

= 16 + 4 e^{2}

a re a - x^{3} + x, (- 1, 1.19148)

d er i v a t i v e \frac{9 u ^{2}}{( u ^{2} + u ) ^{3}}

\frac{d}{d x} (a^{2} + b^{2})

d er i v a t i v e f (x) = (sin^{2} (x) + 1)^{5}

\frac{d}{d x} (\frac{- 1 - x}{x - 1})