(-3X^2+9)/(X^4)

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Solution for (-3X^2+9)/(X^4) 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)

(9-3*X^2)/(X^4) = 0

-3*X^2 = -9 // : -3

X^2 = 3

X^2 = 3 // ^ 1/2

abs(X) = 3^(1/2)

X = 3^(1/2) or X = -3^(1/2)

X in { 3^(1/2), -3^(1/2) }

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