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March 28, 2015

March 28, 2015

Posted by **George** on Friday, September 12, 2008 at 9:31pm.

Please help.....Any assistance would be greatly appreciated.

- Calculus -
**drwls**, Friday, September 12, 2008 at 9:42pmWhy plural? There is only one derivative of that function.

Let x+1 = u, so that

m(x) = m{u(x)}, m(u) = 1/u, and

du/dx = 1

Then use the chain rule

dm/dx = dm/du*du/dx

= -1/u^2 = -1/(x+1)^2

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