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Derivation of F (x) = 2x / x ^ 2 + 1
Derivation of F (x) = 2x / x ^ 2 + 1
F (x) = 2x / x ^ 2 + 1 is the meaning of F (x) = 2x / (x ^ 2 + 1)?
f′(x)=[2(x^2+1)-2x*2x]/(x^2+1)^2
=(2-2x^2)/(x^2+1)^2
The derivation of U / V is: (U ′ V-UV ′) / V ^ 2
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