Question 1143789
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In many cases, finding the derivative is easier if you write the given function in a different form.  It's a technique you might want to look at to see if it works for you.<br>
In this example,<br>
{{{f(x) = (x/(x+1)) = (x+1)/(x+1)-1/(x+1) = 1-1/(x+1) = 1-(x+1)^-1}}}<br>
Now finding the derivative only uses the power rule:<br>
{{{df/dx = -(-1/(x+1)^2) = 1/(x+1)^2}}}