Mathematics, 19.03.2020 13:38 cariyeacarrothers456
Find derivative using first principle definition f(x)=(square root of 9-x)+ ( -2x+1/(x+2))
Answers: 1
![\frac{d}{dx}\left(\frac{1-2x}{x+2}\right)=\frac{\frac{d}{dx}[\left(1-2x\right)]\left(x+2\right)-\frac{d}{dx}[\left(x+2\right)]\left(1-2x\right)}{\left(x+2\right)^2} \\ \\ =\frac{\left(-2\right)\left(x+2\right)-1\cdot \left(1-2x\right)}{\left(x+2\right)^2}= -\frac{5}{\left(x+2\right)^2}](/tpl/images/0554/1508/b12a6.png)
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Find derivative using first principle definition f(x)=(square root of 9-x)+ ( -2x+1/(x+2))...
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