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# Find the derivative of 16/(x^2+4)

## Answer

$\frac{-32x}{\left(4+x^2\right)^2}$

## Step-by-step explanation

Problem

$\frac{d}{dx}\left(\frac{16}{x^2+4}\right)$
1

Applying the quotient rule which states that if $f(x)$ and $g(x)$ are functions and $h(x)$ is the function defined by ${\displaystyle h(x) = \frac{f(x)}{g(x)}}$, where ${g(x) \neq 0}$, then ${\displaystyle h'(x) = \frac{f'(x) \cdot g(x) - g'(x) \cdot f(x)}{g(x)^2}}$

$\frac{\left(4+x^2\right)\frac{d}{dx}\left(16\right)-16\frac{d}{dx}\left(4+x^2\right)}{\left(4+x^2\right)^2}$

## Answer

$\frac{-32x}{\left(4+x^2\right)^2}$

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$\frac{d}{dx}\left(\frac{16}{x^2+4}\right)$

### Main topic:

Differential calculus

~ 0.24 seconds