计算(cosa+isina)^2,(cosa+isina)^3,(cosa+isina)^4的值,并归纳一般结论.已知i是虚数单位(1)计算(cosa+isina)^2,(cosa+isina)^3,(cosa+isina)^4的值,并归纳一般结论.
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![计算(cosa+isina)^2,(cosa+isina)^3,(cosa+isina)^4的值,并归纳一般结论.已知i是虚数单位(1)计算(cosa+isina)^2,(cosa+isina)^3,(cosa+isina)^4的值,并归纳一般结论.](/uploads/image/z/12080646-54-6.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%88cosa%2Bisina%29%5E2%2C%28cosa%2Bisina%29%5E3%2C%28cosa%2Bisina%29%5E4%E7%9A%84%E5%80%BC%2C%E5%B9%B6%E5%BD%92%E7%BA%B3%E4%B8%80%E8%88%AC%E7%BB%93%E8%AE%BA.%E5%B7%B2%E7%9F%A5i%E6%98%AF%E8%99%9A%E6%95%B0%E5%8D%95%E4%BD%8D%EF%BC%881%EF%BC%89%E8%AE%A1%E7%AE%97%EF%BC%88cosa%2Bisina%29%5E2%2C%28cosa%2Bisina%29%5E3%2C%28cosa%2Bisina%29%5E4%E7%9A%84%E5%80%BC%2C%E5%B9%B6%E5%BD%92%E7%BA%B3%E4%B8%80%E8%88%AC%E7%BB%93%E8%AE%BA.)
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