## anonymous one year ago Find the derivative: x/(x^2+1)^1/2. Would greatly appreciate any help as I'm getting stuck in working out the problem just before I get to the answer! Thank you!

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1. IrishBoy123

$\frac{x}{(x^2+1)^{1/2}}$ you are *differentiating* this? [it looks like an easy integral]

2. UnkleRhaukus

if you are differentiating, you can use the quotient rule, and the chain rule

3. IrishBoy123

or the product rule [personal bug bear, why does the quotient rule even exist?]

4. anonymous

On that note, why have any rule? All we really need is the definition ;)