Question 186770
Note: *[Tex \LARGE h=\frac{f}{g} \Rightarrow h'=\frac{f'\cdot g-g'\cdot f}{g^2}]


# 1


*[Tex \LARGE y=\frac{2x-1}{x^2+1}]



*[Tex \LARGE y'=\frac{2\left(x^2+1\right)-2x\left(2x-1\right)}{\left(x^2+1\right)^2}]



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# 2




*[Tex \LARGE F\left(Q\right)=\frac{70}{\left(3Q+1\right)^3}]



*[Tex \LARGE  F'\left(Q\right)=-\frac{630}{\left(3Q+1\right)^4}]




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# 2



*[Tex \LARGE y=\frac{\sqrt{4x+3}}{2x}]



*[Tex \LARGE y'=\frac{\frac{4}{2\cdot\sqrt{4x+3}}-2\cdot\sqrt{4x+3}}{4x^2}]



*[Tex \LARGE y'=-\frac{2x+3}{2x^3\cdot\sqrt{4x+3}}]