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D( a )
4*a^2+2*a = 0
2*a^2-(4*a^4) = 0
4*a^2+2*a = 0
4*a^2+2*a = 0
4*a^2+2*a = 0
DELTA = 2^2-(0*4*4)
DELTA = 4
DELTA > 0
a = (4^(1/2)-2)/(2*4) or a = (-4^(1/2)-2)/(2*4)
a = 0 or a = -1/2
2*a^2-(4*a^4) = 0
2*a^2-(4*a^4) = 0
2*a^2-4*a^4 = 0
t_1 = a^2
2*t_1^1-4*t_1^2 = 0
2*t_1-4*t_1^2 = 0
DELTA = 2^2-(-4*0*4)
DELTA = 4
DELTA > 0
t_1 = (4^(1/2)-2)/(-4*2) or t_1 = (-4^(1/2)-2)/(-4*2)
t_1 = 0 or t_1 = 1/2
t_1 = 0
a^2+0 = 0
a^2 = 0
1*a^2 = 0 // : 1
a^2 = 0
a = 0
t_1 = 1/2
a^2-1/2 = 0
1*a^2 = 1/2 // : 1
a^2 = 1/2
a^2 = 1/2 // ^ 1/2
abs(a) = (1/2)^(1/2)
a = (1/2)^(1/2) or a = -(1/2)^(1/2)
a in (-oo:-(1/2)^(1/2)) U (-(1/2)^(1/2):-1/2) U (-1/2:0) U (0:(1/2)^(1/2)) U ((1/2)^(1/2):+oo)
((a^4)/(2*a^2-(4*a^4)))*((8*a^3+1)/(4*a^2+2*a)) = 0
((a^4)/(2*a^2-4*a^4))*((8*a^3+1)/(4*a^2+2*a)) = 0
(a^4*(8*a^3+1))/((2*a^2-4*a^4)*(4*a^2+2*a)) = 0
2*a^2-4*a^4 = 0
2*a^2*(1-2*a^2) = 0
-2*a^2 = -1 // : -2
a^2 = 1/2
a^2 = 1/2 // ^ 1/2
abs(a) = (1/2)^(1/2)
a = (1/2)^(1/2) or a = -(1/2)^(1/2)
2*a^2*(a-(1/2)^(1/2))*(a+(1/2)^(1/2)) = 0
4*a^2+2*a = 0
2*a*(2*a+1) = 0
2*a+1 = 0 // - 1
2*a = -1 // : 2
a = -1/2
2*a*(a+1/2) = 0
(a^4*(8*a^3+1))/(2*2*a*a^2*(a-(1/2)^(1/2))*(a+(1/2)^(1/2))*(a+1/2)) = 0
( 8*a^3+1 )
8*a^3 = -1 // : 8
a^3 = -1/8
a^3 = -1/8 // ^ 1/3
a = -1/2
( a^4 )
1*a^4 = 0 // : 1
a^4 = 0
a = 0
a in { -1/2}
a in { 0}
a belongs to the empty set
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