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D( w )
w^2 = 0
w = 0
w^2 = 0
w^2 = 0
1*w^2 = 0 // : 1
w^2 = 0
w = 0
w = 0
w = 0
w in (-oo:0) U (0:+oo)
10/w+5/(w^2)+2 = 0
10*w^-1+5*w^-2+2 = 0
t_1 = w^-1
5*t_1^2+10*t_1^1+2 = 0
5*t_1^2+10*t_1+2 = 0
DELTA = 10^2-(2*4*5)
DELTA = 60
DELTA > 0
t_1 = (60^(1/2)-10)/(2*5) or t_1 = (-60^(1/2)-10)/(2*5)
t_1 = (2*15^(1/2)-10)/10 or t_1 = (-2*15^(1/2)-10)/10
t_1 = (-2*15^(1/2)-10)/10
w^-1-((-2*15^(1/2)-10)/10) = 0
1*w^-1 = (-2*15^(1/2)-10)/10 // : 1
w^-1 = (-2*15^(1/2)-10)/10
-1 < 0
1/(w^1) = (-2*15^(1/2)-10)/10 // * w^1
1 = ((-2*15^(1/2)-10)/10)*w^1 // : (-2*15^(1/2)-10)/10
10*(-2*15^(1/2)-10)^-1 = w^1
w = 10*(-2*15^(1/2)-10)^-1
t_1 = (2*15^(1/2)-10)/10
w^-1-((2*15^(1/2)-10)/10) = 0
1*w^-1 = (2*15^(1/2)-10)/10 // : 1
w^-1 = (2*15^(1/2)-10)/10
-1 < 0
1/(w^1) = (2*15^(1/2)-10)/10 // * w^1
1 = ((2*15^(1/2)-10)/10)*w^1 // : (2*15^(1/2)-10)/10
10*(2*15^(1/2)-10)^-1 = w^1
w = 10*(2*15^(1/2)-10)^-1
w in { 10*(-2*15^(1/2)-10)^-1, 10*(2*15^(1/2)-10)^-1 }
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