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TOP34广东省茂名市2016届高三第二次高考模拟数学理试题(WORD解析版).doc文档免费在线阅读 TOP34广东省茂名市2016届高三第二次高考模拟数学理试题(WORD解析版).doc文档免费在线阅读

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不妨设为,则,其中,故当,时,,„„„„分当,时,,„„„„分当,时,,易知在,上单调递减。又,,为,上单调递减且连续不间断,在,有唯的零点,不妨设为,即,其中,由在,上单调递减,有当,时,„„„„分当,时,„„„分法在中,由余弦定理得„„„分„„„„„„„„„分解得已舍去„„„„„„„„„„分„„„„„„分„„„„„„„„„„分„„„„„分„„„„分„„三解答题分解法由正弦定理得„„„„分又,在中„„得,即,又所以,数列是首项为,公比为的等比数列所以,,,所以,所以是以为周期的周期函数。由得,所以,,母线长为,底面圆半径,高,体积为答案,提示因为函数是奇函数,所以,,记,则,即图,最小正周期,所以,答案,提示,作出可行区域如图,作直线,当移到过,时,答案,提示圆锥,上是增函数,在,上是减函数,且,故作函数与在,上的图象如图结合图象可知,有个交点故选答案,提示如在,,是奇函数且是反比例函数,在,是奇函数故在,上是减函数,在,即⊥,由双曲线的定义有,离心率答案,提示由题意知,函数面是正方形且有侧棱垂于底面的四棱锥,可把它补成个长方体,所以,它的外接球表面积为答案,提示直线过左焦点,且其倾斜角为,化为,当且仅当时,等号成立。的最小值是故选答案,提示由几何体的三视图知它是底,第次运算,,符合结束要求这是个当型循环,故选答案,提示,它的展开式中项系数为。答案,提示∥,面朝上的点数,的不同结果共有种事件为,都为偶数且≠包含的基本事件总数为,所以。答案,提示第次运算,,第次运算,比前天多织尺布,则由题意知,解得故选答案,提示直线是抛物线的准线,由抛物线的定义知抛物线上的点到直线的距离与到焦点,的距离相等,所以此圆恒过定点,答案,正也成立。答案,提示函数在上是减函数,即,选答案,提示设从第天起每天择填空题答案与提示答案,提示,则答案,提示为纯虚数,则,,所以,反之也择填空题答案与提示答案,提示,则答案,提示为纯虚数,则,,所以,反之也成立。答案,提示函数在上是减函数,即,选答案,提示设从第天起每天比前天多织尺布,则由题意知,解得故选答案,提示直线是抛物线的准线,由抛物线的定义知抛物线上的点到直线的距离与到焦点,的距离相等,所以此圆恒过定点,答案,正面朝上的点数,的不同结果共有种事件为,都为偶数且≠包含的基本事件总数为,所以。答案,提示第次运算,,第次运算,,第次运算,,符合结束要求这是个当型循环,故选答案,提示,它的展开式中项系数为。答案,提示∥化为,当且仅当时,等号成立。的最小值是故选答案,提示由几何体的三视图知它是底面是正方形且有侧棱垂于底面的四棱锥,可把它补成个长方体,所以,它的外接球表面积为答案,提示直线过左焦点,且其倾斜角为,即⊥,由双曲线的定义有,离心率答案,提示由题意知,函数在,,是奇函数且是反比例函数,在,是奇函数故在,上是减函数,在,上是增函数,在,上是减函数,且,故作函数与在,上的图象如图结合图象可知,有个交点故选答案,提示如图,最小正周期,所以,答案,提示,作出可行区域如图,作直线,当移到过,时,答案,提示圆锥母线长为,底面圆半径,高,体积为答案,提示因为函数是奇函数,所以,,记,则,即,所以,所以是以为周期的周期函数。由得,所以,,得,即,又所以,数列是首项为,公比为的等比数列所以,,三解答题分解法由正弦定理得„„„„分又,在中„„„„„„„„分„„„„„„„„„„分„„„„„分„„„„分„„„„„分法在中,由余弦定理得„„„分„„„„„„„„„分解得已舍去„„„„„„„„„„分„„„„„„„„„„„„„„„„„分„„„„„„„„„„„„„„„„„„分法„„„„„„„„„„„„„„„„„„„„„„„分„„„„„„„分„„分„„分法在中,由余弦定理得„„„„分„„„„„„„„„„„„„„„„„„分„„„„„„„„„„„„„„„„„„„„„„„„分在中,由余弦定理得„„„„分成立„„„„„„„„„„分又因为„„分所以内切圆半径的最大值为„„„„„„„„分法当直线的斜率不存在时又因为所以这时„„„„„„„„„„„„„„„„„„„„„分当直线的斜率存在时,设把代入得得由韦达定理得,„„„„„„„„„„分„„„„„„„„„„„分点到直线的距离为„„„„„„„„„„„„„„„„分„„„分当且仅当即时等号成立„„„„„„„„„分由得解得„„„„„„„„„„„„„„„„„„„„„分又因为所以内切圆半径的最大值为„„„„„„„分解„„„„„„„„„„„„„„„分„„„„„„„„„„„„„„„„„分当时,单调递减,当时,单调递增„„„„„„„„„„„„分所以的单调增区间为单调减区间为,„„„„„„分令则,记,则时,在,是增函数,所以在,上,,在,内单调递增。而,„„„„„„分,,且又因为在,上是增函数且连续不间断,所以在,内有唯的零点,不妨设为,即,其中,„„„„„„分又由于在,内单调递增,则当,时,当,时,那么再令,则有„„„„„„„„„„„„„„分当,时,,,在,上递增又所以时,故当,时,,„„„„„„分当,时,,在,上单调递增,,为,上单调递增且连续不间断,知在,有唯个零点,不妨设为,则,其中,故当,时,,„„„„分当,时,,„„„„分当,时,,易知在,上单调递减。又,,为,上单调递减且连续不间断,在,有唯的零点,不妨设为,即,其中,由在,上单调递减,有当,时,„„„„分当,时,„„„„„分证明Ⅰ的中点为„„„„„„„分为又的直径„„„„„„„„„„„„分∽„„„„„„„„„„„„„„„„„„„„„„„„分„„„„„„„„„„„„„„„„„„„„„„„„„„„分„„„„„„„„„„„„„„„„„„„„„„„分Ⅱ在中,,„„„„„„„„„„„„„„„分在中,,„„„分法„„„„„„分„„„„„„„„„„„„„分法„„„„„„„„„„„„„„分„
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