4=8.4/x

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Solution for 4=8.4/x equation: 


D( x )

x = 0

x = 0

x = 0

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

4 = 8.4/x // - 8.4/x

4-(8.4/x) = 0

4-8.4*x^-1 = 0

-8.4*x^-1 = -4 // : -8.4

x^-1 = 0.47619048

-1 < 0

1/(x^1) = 0.47619048 // * x^1

1 = 0.47619048*x^1 // : 0.47619048

2.09999998 = x^1

x = 2.09999998

x = 2.09999998

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