3/5-c=-4/c

Solution for 3/5-c=-4/c equation:

D( c )

c = 0

c = 0

c = 0

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

3/5-c = -4/c // + -4/c

3/5-c-(-4/c) = 0

4*c^-1-c+3/5 = 0

4*c^-1-1*c^1+3/5*c^0 = 0

(3/5*c^1-1*c^2+4*c^0)/(c^1) = 0 // * c^2

c^1*(3/5*c^1-1*c^2+4*c^0) = 0

c^1

(3/5)*c-c^2+4 = 0

(3/5)*c-c^2+4 = 0

DELTA = (3/5)^2-(-1*4*4)

DELTA = 409/25

DELTA > 0

c = ((409/25)^(1/2)-(3/5))/(-1*2) or c = (-(3/5)-(409/25)^(1/2))/(-1*2)

c = ((409/25)^(1/2)-3/5)/(-2) or c = ((409/25)^(1/2)+3/5)/2

c in { ((409/25)^(1/2)-3/5)/(-2), ((409/25)^(1/2)+3/5)/2} 

c in { ((409/25)^(1/2)-3/5)/(-2), ((409/25)^(1/2)+3/5)/2 }