2021年全国高考乙卷文科数学试题.pdf

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 ( )