90(1/x)=2

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Solution for 90(1/x)=2 equation: 


D( x )

x = 0

x = 0

x = 0

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

90*(1/x) = 2 // - 2

90*(1/x)-2 = 0

90*x^-1 = 2 // : 90

x^-1 = 1/45

-1 < 0

1/(x^1) = 1/45 // * x^1

1 = 1/45*x^1 // : 1/45

45 = x^1

x = 45

x = 45

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