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D( y )
3*y = 0
y^2 = 0
4*y = 0
3*y = 0
3*y = 0
3*y = 0 // : 3
y = 0
y^2 = 0
y^2 = 0
1*y^2 = 0 // : 1
y^2 = 0
y = 0
4*y = 0
4*y = 0
4*y = 0 // : 4
y = 0
y in (-oo:0) U (0:+oo)
1/(3*y)-(1/(4*y)) = 1/(y^2) // - 1/(y^2)
1/(3*y)-(1/(4*y))-(1/(y^2)) = 0
1/(3*y)+(-1/4)*y^-1-y^-2 = 0
1/12*y^-1-y^-2 = 0
t_1 = y^-1
1/12*t_1^1-1*t_1^2 = 0
1/12*t_1-t_1^2 = 0
DELTA = (1/12)^2-(-1*0*4)
DELTA = 1/144
DELTA > 0
t_1 = ((1/144)^(1/2)-1/12)/(-1*2) or t_1 = (-(1/144)^(1/2)-1/12)/(-1*2)
t_1 = 0 or t_1 = 1/12
t_1 = 0
y^-1+0 = 0
y^-1 = 0
1*y^-1 = 0 // : 1
y^-1 = 0
y należy do O
t_1 = 1/12
y^-1-1/12 = 0
1*y^-1 = 1/12 // : 1
y^-1 = 1/12
-1 < 0
1/(y^1) = 1/12 // * y^1
1 = 1/12*y^1 // : 1/12
12 = y^1
y = 12
y = 12
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