2020北京四中高三(上)期中数学含答案.pdf
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2020 鍖椾含鍥涗腑楂樹笁锛堜笂锛夋湡涓 鏁 瀛 锛堣瘯鍗锋弧鍒嗕负150 鍒嗭紝鑰冭瘯鏃堕棿涓?20 鍒嗛挓锛
涓€銆侀€夋嫨棰橈紙鏈ぇ棰樺叡10 灏忛锛屾瘡灏忛4 鍒嗭紝鍏?0 鍒嗭級 飦 x 飦 B = x x 鈭? 飥 0 1.宸茬煡鍏ㄩ泦U = R 锛岄泦鍚圓 = x 2 飥? 锛 飦 飦 锛屽垯(冒 A) B = U A 锛巤 x | x 飥 2 } B 锛庯伝 x 0 飩 x 飥 2飦 C 锛巤 x | 0 飥 x 飩 2} D 锛巤 x | x 飩 2 }
2.涓嬪垪鍛介涓殑鍋囧懡棰樻槸 锛庯紟锛 A. 飥 飪嶳, sin x = 2 B. 飥 飪嶳, ln x = 2 C. 飥 飪嶳, x2 飩? D. 飥 飪嶳, 2x 飥? a 鈭抌 b
3. 宸茬煡鍚戦噺a = 5, m 锛宐 = 2, 鈭? 锛岃嫢 涓 鍏辩嚎锛屽垯瀹炴暟m = ( ) ( ) A. 鈭? B. 1 C. 2 D. 鈭? f x R f x =log x f x 飥 0
4. 宸茬煡 ( ) 鏄 涓婄殑濂囧嚱鏁帮紝褰搙 飥 0 鏃? ( ) 1 ,鍒 ( ) 鐨勮В闆嗘槸 2 A 锛?鈭?, 0) B 锛?0,1) C 锛?鈭掞偉, 鈭?) (0,1) D 锛?鈭?, 0) (0,1) 飦 飦 g x g x
5.灏嗗嚱鏁癴 (x) =sin(2x 鈭 ) 鐨勫浘璞″悜宸﹀钩绉 涓崟浣嶉暱搴︼紝寰楀埌鍑芥暟 ( ) 鐨勫浘璞★紝鍒 ( ) = 6 3 飦 2飦 A 锛巗in(2x + ) B 锛巗in(2x + ) 6 3 C 锛巆os 2x D 锛庘垝cos 2x
6.鑻, b 飪嶳 锛屼笖ab 飥? 锛屽垯涓嬪垪涓嶇瓑寮忎腑锛屾亽鎴愮珛鐨勬槸 2 2 1 1 2 b a A 锛巃 +b 飥 2ab B 锛巃 +b 飩 2 ab C 锛 + 飥 D 锛 +