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Popular >

derivative of (2x-1/(x+9))

Solution

\frac{d}{d x} (\frac{2 x - 1}{x + 9})

Solution

\frac{19}{( x + 9 ) ^{2}}

Solution steps

\frac{d}{d x} (\frac{2 x - 1}{x + 9})

Apply the Quotient Rule:

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

= \frac{\frac{d}{d x} ( 2 x - 1 ) ( x + 9 ) - \frac{d}{d x} ( x + 9 ) ( 2 x - 1 )}{( x + 9 ) ^{2}}

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

\frac{d}{d x} (x + 9) = 1

= \frac{2 ( x + 9 ) - 1 \cdot ( 2 x - 1 )}{( x + 9 ) ^{2}}

Simplify

\frac{2 ( x + 9 ) - 1 \cdot ( 2 x - 1 )}{( x + 9 ) ^{2}} : \frac{19}{( x + 9 ) ^{2}}

= \frac{19}{( x + 9 ) ^{2}}

Graph

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Frequently Asked Questions (FAQ)

What is the derivative of (2x-1/(x+9)) ?
The derivative of (2x-1/(x+9)) is (19)/((x+9)^2)
What is the first derivative of (2x-1/(x+9)) ?
The first derivative of (2x-1/(x+9)) is (19)/((x+9)^2)