4=1.25/x

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Solution for 4=1.25/x equation: 


D( x )

x = 0

x = 0

x = 0

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

4 = 1.25/x // - 1.25/x

4-(1.25/x) = 0

4-1.25*x^-1 = 0

-1.25*x^-1 = -4 // : -1.25

x^-1 = 3.2

-1 < 0

1/(x^1) = 3.2 // * x^1

1 = 3.2*x^1 // : 3.2

0.3125 = x^1

x = 0.3125

x = 0.3125

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