Cos(65)=3/x

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Solution for Cos(65)=3/x equation: 


D( x )

x = 0

x = 0

x = 0

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

cos(65) = 3/x // - 3/x

cos(65)-(3/x) = 0

cos(65)-3*x^-1 = 0

-3*x^-1 = -cos(65) // : -3

x^-1 = cos(65)/3

-1 < 0

1/(x^1) = cos(65)/3 // * x^1

1 = (cos(65)/3)*x^1 // : cos(65)/3

3*(cos(65))^-1 = x^1

x = 3*(cos(65))^-1

x = 3*(cos(65))^-1

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