[中學] 100桃園高中教師甄選
一圓柱體底面半徑為6,今有兩球半徑亦為6,放入此柱體
已知兩球球心距為13,被一平面隔開(兩球心在平面異側),
請證明平面與圓柱體之交點軌跡為一橢圓,並求橢圓長軸長。
(題意有遺漏或錯誤還請指正)
另外想請問一拋物線(開口向上)
已知當x在[0,1]上,f(x)恆大於0
要討論哪些條件才能確保已知成立。
感謝指導
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