9/2=4/x

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Solution for 9/2=4/x equation: 


D( x )

x = 0

x = 0

x = 0

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

9/2 = 4/x // - 4/x

9/2-(4/x) = 0

9/2-4*x^-1 = 0

-4*x^-1 = -9/2 // : -4

x^-1 = 9/8

-1 < 0

1/(x^1) = 9/8 // * x^1

1 = 9/8*x^1 // : 9/8

8/9 = x^1

x = 8/9

x = 8/9

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