-2/5-1/d

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Solution for -2/5-1/d equation: 


D( d )

d = 0

d = 0

d = 0

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

-(1/d)-2/5 = 0

-d^-1-2/5 = 0

-1*d^-1 = 2/5 // : -1

d^-1 = -2/5

-1 < 0

1/(d^1) = -2/5 // * d^1

1 = -2/5*d^1 // : -2/5

-5/2 = d^1

d = -5/2

d = -5/2

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