复数计算 (1-根号3i)^10-(1+根号3i)^10=?

学习 时间:2026-03-30 22:01:33 阅读:1305
复数计算 (1-根号3i)^10-(1+根号3i)^10=?

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傻傻的酸奶

无限的小懒虫

2026-03-30 22:01:33

解析:(1-根号3i)^10=2^10 ×(1/2 -根号3/2 ×i)^10=2^10 ×[cos(-π/3)+sin(-π/3)×i]^10=2^10 ×[cos(-10π/3)+sin(-10π/3)×i]=2^10 ×[cos(2π/3)+sin(2π/3)×i]=2^10 ×(-1/2+根号3/2×i )而 (1+根号3i)^10=2^10 ×(1/2 +根号3/2 ×i)^10=2^10 ×[cos(π/3)+sin(π/3)×i]^10=2^10 ×[cos(10π/3)+sin(10π/3)×i]=2^10 ×[cos(4π/3)+sin(4π/3)×i]=2^10 ×[-cos(π/3)-sin(π/3)×i]=2^10 ×(-1/2-根号3/2×i )所以: (1-根号3i)^10-(1+根号3i)^10=2^10 ×(-1/2+根号3/2×i )-2^10 ×(-1/2-根号3/2×i )=2^10 ×[(-1/2+根号3/2×i )-(-1/2-根号3/2×i )]=2^10 ×根号3×i=1024根号3×i

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  • 高大的身影
    回复
    2026-03-30 22:01:33

    解析:(1-根号3i)^10=2^10 ×(1/2 -根号3/2 ×i)^10=2^10 ×[cos(-π/3)+sin(-π/3)×i]^10=2^10 ×[cos(-10π/3)+sin(-10π/3)×i]=2^10 ×[cos(2π/3)+sin(2π/3)×i]=2^10 ×(-1/2+根号3/2×i )而 (1+根号3i)^10=2^10 ×(1/2 +根号3/2 ×i)^10=2^10 ×[cos(π/3)+sin(π/3)×i]^10=2^10 ×[cos(10π/3)+sin(10π/3)×i]=2^10 ×[cos(4π/3)+sin(4π/3)×i]=2^10 ×[-cos(π/3)-sin(π/3)×i]=2^10 ×(-1/2-根号3/2×i )所以: (1-根号3i)^10-(1+根号3i)^10=2^10 ×(-1/2+根号3/2×i )-2^10 ×(-1/2-根号3/2×i )=2^10 ×[(-1/2+根号3/2×i )-(-1/2-根号3/2×i )]=2^10 ×根号3×i=1024根号3×i

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