【導讀】，則集合Z∩CRA中元。4．如右圖，是一程序框圖，若輸出結果為511，則其中的“?”成等比數(shù)列，則xyz的值為。的零點恰有四個，則。13．實數(shù)x，y滿足條件40,220,－11－為偶數(shù)，為奇數(shù).的值，并求函數(shù)()fx的單調增區(qū)間；（Ⅱ）若從研究小組的公務員和教師中隨機選3人撰寫研究報告，）的離心率為12，橢圓與x軸。兩點，過點C的直線l與橢。在[a，b]上的值域為[ka，kb]，則稱區(qū)間[a，b]為()yfx?（Ⅰ）試判斷函數(shù)2()gxx?存在“和諧k區(qū)間”，求正整數(shù)k的最小值；請考生在第22、23、24三題中任選一題做答．如果多做。建立極坐標系，已知曲線C的極坐標方程為ρ2sin?的直線l的參數(shù)方程為。（Ⅰ）寫出曲線C的直角坐標方程和直線l的普通方程；（Ⅰ）當a＝3時，求不等式()46fxx??（Ⅱ）若不等式()0fx?的一條對稱軸為16x?

　　

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