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Popular Calculus >

derivative of (3x-1/(2x+5))

Solution

\frac{d}{d x} (\frac{3 x - 1}{2 x + 5})

Solution

\frac{17}{( 2 x + 5 ) ^{2}}

Solution steps

\frac{d}{d x} (\frac{3 x - 1}{2 x + 5})

Apply the Quotient Rule:

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

= \frac{\frac{d}{d x} ( 3 x - 1 ) ( 2 x + 5 ) - \frac{d}{d x} ( 2 x + 5 ) ( 3 x - 1 )}{( 2 x + 5 ) ^{2}}

\frac{d}{d x} (3 x - 1) = 3

\frac{d}{d x} (2 x + 5) = 2

= \frac{3 ( 2 x + 5 ) - 2 ( 3 x - 1 )}{( 2 x + 5 ) ^{2}}

Expand

3 (2 x + 5) - 2 (3 x - 1) : 17

= \frac{17}{( 2 x + 5 ) ^{2}}

Graph

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Frequently Asked Questions (FAQ)

What is the derivative of (3x-1/(2x+5)) ?
The derivative of (3x-1/(2x+5)) is (17)/((2x+5)^2)
What is the first derivative of (3x-1/(2x+5)) ?
The first derivative of (3x-1/(2x+5)) is (17)/((2x+5)^2)