17/11/19 16:56:41.12 PrPXB/k6.net
>>226
>>276 にしたがって
x^3 +x^2 +｛(1+√5)/2}x -1 = 0
実根 [-1 +｛(3√(6(77+25√5)）+（59+9√5))/4}^(1/3）-｛(3√(6(77+25√5)）-（59+9√5))/4}^(1/3)]/3
= 0.443007642263665
複素根 -0.72150382113183 -1.31785038536616*ｉ
-0.72150382113183 +1.31785038536616*ｉ