I was told to differentiate by definition!!! Function(adsbygoogle = window.adsbygoogle || []).push({});

f = 1/(sqrt(1+x^2));

which gives me the expression

Lim(h->0) {(1/(sqrt(1+(x+h)^2)) - 1/(sqrt(1+x^2)))/h}

problem is...I can’t seem to get rid of the h at the bottom...I’ve tried all teh math packages I have including maple and all of them just seem to complicate things! what should be the simplified version of that function so I don’t get h at the bottom resulting in undefined numbers. or is there a different way to look at this definition problem?

Thanks heaps

K. Civilian

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# Yet another limit problem!

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