安徽省定远中学2019届高三数学第四次阶段性检测试题（PDF）.rar

由 扫描全能王 扫描创建由 扫描全能王 扫描创建数学参考答案题号 （1） （2） （3） （4） （5） （6） （7） （8） （9） （10） （11） （12）答案D B A B C B C C A B A C（13）2 （14） （15）17.解析： (1)当 a＝－1 时，f (x)＝x 2－ 2x＋ 1＝( x－ 1)2，对称轴为 x＝ 1， f(x)min＝ f(1)＝ 0， f(x)max＝ f(－ 5)＝ 36，∴ f(x)的最大值为 36，最小值为 0.(6 分 )(2)对称轴为 x ＝－ a，当－a ≤－ 5 或－ a≥5 时， f(x)在 [－ 5，5]上是单调函数，∴ a≥5 或 a≤－5.(10分)槡G26G26（16）G26G32G30G23G21G21G23FABCEMPG23 G24G40G41G26G23G22G24GBAG50G2CGBBG37G2EGBCGBDG8CGBEGB0G30G27G3DGA7GBFG37G2CG2EG32GA7GBFG37G2EG2DG27G37G2CG30G32GA7GBFG37G2EG2DG27G2CG30G32G2EG2DG22GC0G3DG37G2CG32GA7GBFG2CG2EG2DG27G37G37G2CG32G2EG2DG27G2EG2DG32GA7GBFG37G2CG2EG27G2EG2DG32G2CG2EG27G37G2EG2DG32G25G27GC1G80GC2G37G38G2CG2EG2DG61G7EG79G39G32G23G26G3EG23G21G3EG26G3EG25G3EG25G32G29G22G23G27GA2G24G23G23G24G42G23G22G24G4EG2EG2DG32G37G2EG27G37G2DG32槡G25G23G27G2CG3AG32G2EG3AG32槡G25G23G21G27G3AGC3G2CG2EG61GC4GC5G65G2BG32G23槡G25G23G21G24G21G33G23G26G21G24槡G21G32G21槡G27G21G28G33G2CG2EG3AG32G23G21G3EG26G3EG21G27G21G32G26G21槡槡G39G37G38G3AG2CG2EG32G23G21G39G32G25G27G62G37GC3GA7GBFG2CG2EG3AG61GC4GC5G65G3BG27G66G25G32G23G26G3EG26槡G21G3BG27G3B槡G32G21G27G21G37G3CG2EG44G37G2EG32槡G21G21G26槡G21G21G32G23G44G25G27G2EG3CG32G23G25G37G2EG32G27G25G22G23G23G21GA2G24G23G29（20）解析：（Ⅰ）由已知及正弦定理可得 2 2 2 2 22 22 1, 2 ,a b ab a b c abc c      2 2cos ,2 2abC ab    3π4C  .（6分）（Ⅱ）由正弦定理得 sin 1sin 2a CA c  ，又 π0 2A  ， π6A  ，故 3π πtan tan4 6tan tan( ) 2 3.3π π1 tan tan4 6B A C       （12分）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