22/7-66/x

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Solution for 22/7-66/x equation: 


D( x )

x = 0

x = 0

x = 0

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

22/7-(66/x) = 0

22/7-66*x^-1 = 0

-66*x^-1 = -22/7 // : -66

x^-1 = 1/21

-1 < 0

1/(x^1) = 1/21 // * x^1

1 = 1/21*x^1 // : 1/21

21 = x^1

x = 21

x = 21

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