(2x^2)/(x^2+1)

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Solution for (2x^2)/(x^2+1) equation: 


D( x )

x^2+1 = 0

x^2+1 = 0

x^2+1 = 0

1*x^2 = -1 // : 1

x^2 = -1

x in (-oo:+oo)

(2*x^2)/(x^2+1) = 0

2*x^2 = 0 // : 2

x^2 = 0

x = 0

x = 0

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