0.5=20/x

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Solution for 0.5=20/x equation: 


D( x )

x = 0

x = 0

x = 0

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

0.5 = 20/x // - 20/x

0.5-(20/x) = 0

0.5-20*x^-1 = 0

-20*x^-1 = -0.5 // : -20

x^-1 = 0.025

-1 < 0

1/(x^1) = 0.025 // * x^1

1 = 0.025*x^1 // : 0.025

40 = x^1

x = 40

x = 40

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