By solving cubic equation in maple (version 17), I got
y1, y2, y3 formulas are computed by Maple by solving it for general formula.
But, now I got answers in real and imaginery parts, i.e
y1 = -119.0286907-1.*10^(-9)*I
y2 = .770924807+1.772050808*10^(-8)*I
y3 = 7.123944373-1.692050808*10^(-8)*I
Why, is it so?
I want answers in simple forum directly only by using these formulas. As i have to show the proof!
Thanks in advance