derivative y=(6x^2+2x+6)/(sqrt(x))

解

導関数

y = \frac{6 x ^{2} + 2 x + 6}{x}

\frac{9 x ^{2} + x - 3}{x x}

解答ステップ

\frac{d}{d x} (\frac{6 x ^{2} + 2 x + 6}{x})

商の法則を適用:

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

= \frac{\frac{d}{d x} ( 6 x ^{2} + 2 x + 6 ) x - \frac{d}{d x} ( x ) ( 6 x ^{2} + 2 x + 6 )}{( x ) ^{2}}

\frac{d}{d x} (6 x^{2} + 2 x + 6) = 12 x + 2

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

= \frac{( 12 x + 2 ) x - \frac{1}{2 x} ( 6 x ^{2} + 2 x + 6 )}{( x ) ^{2}}

簡素化

\frac{( 12 x + 2 ) x - \frac{1}{2 x} ( 6 x ^{2} + 2 x + 6 )}{( x ) ^{2}} : \frac{9 x ^{2} + x - 3}{x x}

= \frac{9 x ^{2} + x - 3}{x x}