4x=40,5/(5x)

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Solution for 4x=40,5/(5x) equation: 


D( x )

5*x = 0

5*x = 0

5*x = 0

5*x = 0 // : 5

x = 0

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

4*x = 40.5/(5*x) // - 40.5/(5*x)

4*x-(40.5/(5*x)) = 0

4*x-8.1*x^-1 = 0

4*x-8.1*x^-1 = 0

x^-1*(4*x^2-8.1) = 0

4*x^2 = 8.1 // : 4

x^2 = 2.025

x^2 = 2.025 // ^ 1/2

abs(x) = 2.025^(1/2)

x = 2.025^(1/2) or x = -2.025^(1/2)

1/x = 0

1*x^-1 = 0 // : 1

x^-1 = 0

x należy do O

x in { 2.025^(1/2), -2.025^(1/2) }

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