2.1/y=1.2/5/2

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Solution for 2.1/y=1.2/5/2 equation: 


D( y )

y = 0

y = 0

y = 0

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

2.1/y = (1.2/5)/2 // - (1.2/5)/2

2.1/y-((1.2/5)/2) = 0

2.1/y-0.12 = 0

2.1*y^-1 = 0.12 // : 2.1

y^-1 = 0.05714286

-1 < 0

1/(y^1) = 0.05714286 // * y^1

1 = 0.05714286*y^1 // : 0.05714286

17.49999913 = y^1

y = 17.49999913

y = 17.49999913

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