2021年全国高考乙卷文科数学试题.pdf
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涓€銆侀€夋嫨棰橈細鏈鍏 12 灏忛锛屾瘡灏忛5 鍒嗭紝鎬诲叡60 鍒嗐€傚湪姣忓皬棰樼粰鍑虹殑鍥涗釜閫
椤逛腑锛屽彧鏈変竴椤规槸绗﹀悎棰樼洰瑕佹眰鐨勩€
1. 宸茬煡鍏ㄩ泦U={1,2,3,4,5},闆嗗悎M={1,2},N={3,4},鍒機u 锛圡UN 锛
A.{5}
B.{1,2}
C.{3,4}
D.{1,2,3,4}
2.璁緄z=4+3i 锛屽垯z 绛変簬
A.-3-4i
B.-3+4i
C.3-4i
D.3+4i
3. 宸茬煡鍛介p 锛氣垉x系R锛宻inx<1锛屽懡棰榪: 鈭€x系R锛宔|x|鈮?锛屽垯涓嬪垪鍛介涓负鐪熷懡棰樼殑鏄
A.p鈭
B.卢p鈭
C.p鈭 卢q
D.卢(p鈭╭) 肀 肀
4. 鍑芥暟f 锛坸 锛堼sin +cos 鐨勬渶灏忔鍛ㄦ湡鍜屾渶澶у€煎垎鍒槸 3 3
A.3蟺鍜 2 鈭
B.3蟺鍜?
C.6蟺鍜 2 鈭
D.6蟺鍜? 肀 + 肀 鈮 4
5.鑻 锛寉 婊¤冻绾︽潫鏉′欢{肀 鈭 肀 鈮 2,鍒檢=3x+y 鐨勬渶灏忓€间负 肀 鈮 3
A.18
B.10
C.6
D.4 2 饊寢 2 5饊寢
6.cos 鈭 cos = 12 12 1
A. 2 鈭?
B. 3 鈭?
C. 2 鈭?
D. 2 1 1
7.鍦ㄥ尯闂?0, )闅忔満鍙? 涓暟锛屽垯鍙栧埌鐨勬暟灏忎簬 鐨勬鐜囦负 2 3 3
A. 4 2
B. 3 1
C. 3 1
D. 6
8.涓嬪垪鍑芥暟涓渶灏忓€间负4 鐨勬槸
A.y = 肀 2 + 2肀 + 4 4
B.y = |sin 肀 | + |sin 肀 |
C.y = 2肀 + 22鈭掜饱 4
D.y = ln 肀 + ln 肀 1鈭掜饱 ( )
9.璁惧嚱鏁癴 x = 锛屽垯涓嬪垪鍑芥暟涓负濂囧嚱鏁扮殑鏄 1+肀 ( )
A. f x 鈭 1 鈭 1 ( )
B. f x 鈭