14x^2/x^4+49

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Solution for 14x^2/x^4+49 equation: 


D( x )

x^4 = 0

x^4 = 0

x^4 = 0

1*x^4 = 0 // : 1

x^4 = 0

x = 0

x in (-oo:0) U (0:+oo)

(14*x^2)/(x^4)+49 = 0

14*x^-2 = -49 // : 14

x^-2 = -7/2

-2 < 0

1/(x^2) = -7/2 // * x^2

1 = -7/2*x^2 // : -7/2

-2/7 = x^2

x belongs to the empty set

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