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D( t )
2^1.2 = 0
2^1.2 = 0
2^1.2 = 0
2^1.2 = 0
t belongs to the empty set
t in (-oo:+oo)
((2^2.2*t)/(2^1.2))*t = 3 // - 3
((2^2.2*t)/(2^1.2))*t-3 = 0
2*t^2 = 3 // : 2
t^2 = 3/2
t^2 = 3/2 // ^ 1/2
abs(t) = (3/2)^(1/2)
t = (3/2)^(1/2) or t = -(3/2)^(1/2)
t in { (3/2)^(1/2), -(3/2)^(1/2) }
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