1/5z+2/z

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Solution for 1/5z+2/z equation: 


D( z )

z = 0

z = 0

z = 0

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

(1/5)*z+2/z = 0

1/5*z^1+2*z^-1 = 0

(1/5*z^2+2*z^0)/(z^1) = 0 // * z^2

z^1*(1/5*z^2+2*z^0) = 0

z^1

(1/5)*z^2+2 = 0

(1/5)*z^2+2 = 0

DELTA = 0^2-(2*4*(1/5))

DELTA = -8/5

DELTA < 0

z in { } 

z belongs to the empty set

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