w^3=81

解

w^{3} = 81

w = 333, w = \frac{3 ( - 3 3 + 6 3 ^{5} i )}{2}, w = \frac{3 ( - 3 3 - 6 3 ^{5} i )}{2}

解答ステップ

w^{3} = 81

x^{3} = f (a)

では, 解は

x = 3 f (a), 3 f (a) \frac{- 1 - 3 i}{2}, 3 f (a) \frac{- 1 + 3 i}{2}

w = 381, w = 381 \frac{- 1 + 3 i}{2}, w = 381 \frac{- 1 - 3 i}{2}

381 = 333

簡素化

381 \frac{- 1 + 3 i}{2} : \frac{3 ( - 3 3 + 6 3 ^{5} i )}{2}

簡素化

381 \frac{- 1 - 3 i}{2} : \frac{3 ( - 3 3 - 6 3 ^{5} i )}{2}

w = 333, w = \frac{3 ( - 3 3 + 6 3 ^{5} i )}{2}, w = \frac{3 ( - 3 3 - 6 3 ^{5} i )}{2}