证明(1+√3i)的负10次方等于2的负11次方乘以(-1+√3i)
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发布时间:2022-04-23 08:31
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时间:2022-06-18 10:29
证:(1+✓3i)^(-2)=1/(1+2✓3i-3)=1/2(1+✓3i)=(1-✓3i)/(-4),
(1+✓3i)^(-10)
=(1+✓3i)^(-2×5)
=(1-✓3i)^5/(-4)^5
=(1-✓3i)(-2-2✓3i)^2/(-2^10)
=-2(1-✓3i)(-2+2✓3i)/(-2^10)
=(1-✓3i)^2/(-2^8)
=(-2-2✓3i)/(-2^8)
=2^(-7)(1+✓3i)