derivative (x-2)/(sqrt(x)-\sqrt{2)}

解答

导数

\frac{x - 2}{x - 2}

\frac{x - 2 2 x + 2}{2 x ( x - 2 ) ^{2}}

求解步骤

\frac{d}{d x} (\frac{x - 2}{x - 2})

使用微分除法定则:

(\frac{f}{g})^{'} = \frac{f ^{'} \cdot g - g ^{'} \cdot f}{g ^{2}}

= \frac{\frac{d}{d x} ( x - 2 ) ( x - 2 ) - \frac{d}{d x} ( x - 2 ) ( x - 2 )}{( x - 2 ) ^{2}}

\frac{d}{d x} (x - 2) = 1

\frac{d}{d x} (x - 2) = \frac{1}{2 x}

= \frac{1 \cdot ( x - 2 ) - \frac{1}{2 x} ( x - 2 )}{( x - 2 ) ^{2}}

化简

\frac{1 \cdot ( x - 2 ) - \frac{1}{2 x} ( x - 2 )}{( x - 2 ) ^{2}} : \frac{x - 2 2 x + 2}{2 x ( x - 2 ) ^{2}}

= \frac{x - 2 2 x + 2}{2 x ( x - 2 ) ^{2}}

u \to 2 + lim (u^{2})

\frac{d ^{2} y}{d x ^{2}}

\frac{\partial}{\partial x} (2 x e^{a y} a + 3 e^{x b})

\frac{d}{d x} (3 x + x^{5})

\frac{2 d y}{d x} = y^{2}