-1.2=4.2/x

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Solution for -1.2=4.2/x equation: 


D( x )

x = 0

x = 0

x = 0

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

-1.2 = 4.2/x // - 4.2/x

-(4.2/x)-1.2 = 0

-4.2*x^-1-1.2 = 0

-4.2*x^-1 = 1.2 // : -4.2

x^-1 = -0.28571429

-1 < 0

1/(x^1) = -0.28571429 // * x^1

1 = -0.28571429*x^1 // : -0.28571429

-3.49999995 = x^1

x = -3.49999995

x = -3.49999995

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