What is the derivative of f(x)=sqrt(9x+4) ?

The derivative of f(x)=sqrt(9x+4) is 9/(2sqrt(9x+4))

What is the first derivative of f(x)=sqrt(9x+4) ?

The first derivative of f(x)=sqrt(9x+4) is 9/(2sqrt(9x+4))

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derivative of

f (x) = 9 x + 4

\frac{9}{2 9 x + 4}

Solution steps

\frac{d}{d x} (9 x + 4)

Apply the chain rule:

\frac{1}{2 9 x + 4} \frac{d}{d x} (9 x + 4)

= \frac{1}{2 9 x + 4} \frac{d}{d x} (9 x + 4)

\frac{d}{d x} (9 x + 4) = 9

= \frac{1}{2 9 x + 4} \cdot 9

Simplify

\frac{1}{2 9 x + 4} \cdot 9 : \frac{9}{2 9 x + 4}

= \frac{9}{2 9 x + 4}

What is the derivative of f(x)=sqrt(9x+4) ?
The derivative of f(x)=sqrt(9x+4) is 9/(2sqrt(9x+4))
What is the first derivative of f(x)=sqrt(9x+4) ?
The first derivative of f(x)=sqrt(9x+4) is 9/(2sqrt(9x+4))