7/5w+4/w=1

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Solution for 7/5w+4/w=1 equation: 


D( w )

w = 0

w = 0

w = 0

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

(7/5)*w+4/w = 1 // - 1

(7/5)*w+4/w-1 = 0

7/5*w^1+4*w^-1-1*w^0 = 0

(7/5*w^2-1*w^1+4*w^0)/(w^1) = 0 // * w^2

w^1*(7/5*w^2-1*w^1+4*w^0) = 0

w^1

(7/5)*w^2-w+4 = 0

(7/5)*w^2-w+4 = 0

DELTA = (-1)^2-(4*4*(7/5))

DELTA = -107/5

DELTA < 0

w in { } 

w belongs to the empty set

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