limit as x approaches 0 of e^xcos(2x)

解答

x \to 0 lim (e^{x} cos (2 x))

1

求解步骤

x \to 0 lim (e^{x} cos (2 x))

代入值

x = 0

= e^{0} cos (2 \cdot 0)

化简

e^{0} cos (2 \cdot 0) : 1

= 1

\int_{2}^{e^{3}} \frac{1}{x} d x

d er i v a t i v e y = \frac{2 cos ( x )}{x + 1}

d er i v a t i v e e^{- 3 x^{2}}

in v erse l a pl a ce \frac{- s}{7 s ^{2} + 26 s + 25}

\frac{d}{d x} (7 x + 3)