Cos(23)=8/x

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Solution for Cos(23)=8/x equation: 


D( x )

x = 0

x = 0

x = 0

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

cos(23) = 8/x // - 8/x

cos(23)-(8/x) = 0

cos(23)-8*x^-1 = 0

-8*x^-1 = -cos(23) // : -8

x^-1 = cos(23)/8

-1 < 0

1/(x^1) = cos(23)/8 // * x^1

1 = (cos(23)/8)*x^1 // : cos(23)/8

8*(cos(23))^-1 = x^1

x = 8*(cos(23))^-1

x = 8*(cos(23))^-1

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