cos(28)=11/x

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Solution for cos(28)=11/x equation: 


D( x )

x = 0

x = 0

x = 0

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

cos(28) = 11/x // - 11/x

cos(28)-(11/x) = 0

cos(28)-11*x^-1 = 0

-11*x^-1 = -cos(28) // : -11

x^-1 = cos(28)/11

-1 < 0

1/(x^1) = cos(28)/11 // * x^1

1 = (cos(28)/11)*x^1 // : cos(28)/11

11*(cos(28))^-1 = x^1

x = 11*(cos(28))^-1

x = 11*(cos(28))^-1

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