6/2.1=4/x

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Solution for 6/2.1=4/x equation: 


D( x )

x = 0

x = 0

x = 0

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

6/2.1 = 4/x // - 4/x

6/2.1-(4/x) = 0

6/2.1-4*x^-1 = 0

-4*x^-1 = -2.85714286 // : -4

x^-1 = 0.71428572

-1 < 0

1/(x^1) = 0.71428572 // * x^1

1 = 0.71428572*x^1 // : 0.71428572

1.39999999 = x^1

x = 1.39999999

x = 1.39999999

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