8/u+2/5u

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Solution for 8/u+2/5u equation: 


D( u )

u = 0

u = 0

u = 0

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

(2/5)*u+8/u = 0

2/5*u^1+8*u^-1 = 0

(2/5*u^2+8*u^0)/(u^1) = 0 // * u^2

u^1*(2/5*u^2+8*u^0) = 0

u^1

(2/5)*u^2+8 = 0

(2/5)*u^2+8 = 0

DELTA = 0^2-(4*8*(2/5))

DELTA = -64/5

DELTA < 0

u in { } 

u belongs to the empty set

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