大陸地獄高考數學試題

校園
#1 送禮唔代表我愛你
18/03/24 03:45

無錯,喺 Conics,

會考附加數2003年後OUT C唔再考

可是,呢類題目大陸同台灣高中文科係必考

DSE狀元可謂出生時間夠哂負碌避哂killers

你地可以試下做,個答案成三版A4紙

題目難在一唔小心就會犯算術錯誤

而且要分Case, 每個case都要代至少一元代數

表達得唔好,好易就PP-1同代錯數

條題目設計好在全面包圍基本考點,

重數學思維,尤其係 heuristics,

15分鐘內要完成全題,評分參考跳咗好多step

所謂名校嘅操卷仔見到呢題肯定騰雞答唔切

如果當年考會考附加數見到呢題,我肯定肥佬

#2 送禮唔代表我愛你
18/03/24 04:12

Key points:

When writing the equation of straight line using y=mx+c, we should aware that it does not include vertical lines, so there are 2 cases.

Also, there are lots of algebraic substitutions of degree >1. Try deriving x_1•y_2 + x_2•y_1.

#3 送禮唔代表我愛你
18/03/24 04:13

Key points:

When writing the equation of straight line using y=mx+c, we should aware that it does not include vertical lines, so there are 2 cases.

Also, there are lots of algebraic substitutions of degree >1. Try deriving x_1•y_2 + x_2•y_1.

we should beware that it does not include vertical lines, so there are 2 cases.

#4 送禮唔代表我愛你
18/03/24 04:17

至於 heuristics, 就係靠平時做題經驗習得技巧

例如有一條直線 AB, 中間係M,

即AM=MB, 咁已知A同M嘅座標,

咁好自然唔駛計數機都可以即時得出B嘅座標

#5 巨無霸餐
18/03/24 04:47

睇慣英文睇唔明中文題目

#6 前郊登反駁隊長
18/03/24 06:13

嘩 好撚勁呀看更師兄

#7 送禮唔代表我愛你
18/03/24 10:49

睇慣英文睇唔明中文題目

條題目係past paper嚟

2022 年全國乙卷 第20題

自己Google個solution睇下睇唔睇得明

#8 送禮唔代表我愛你
18/03/24 10:52

其實大陸同印度數理化卷係出咗名難

只不過每年大陸卷個個省都唔同版本

變咗唔駛買坊間嘅練習都可以操餐飽

#9 送禮唔代表我愛你
18/03/24 11:13

上面就係印度高考數學材料

睇完你就明點解咖哩佬可以做微軟首席執行官

#10 送禮唔代表我愛你
18/03/24 23:49

Solution:

#11 送禮唔代表我愛你
19/03/24 00:15

Try this.

#12 送禮唔代表我愛你
19/03/24 00:16

Try this.

Hint:

AM≥GM

(Not assessed in HKDSE)

#13 ASDFGH
21/03/24 01:00

Try this.

Answer: A

#14 ASDFGH
21/03/24 01:26

Solution using HKDSE level methods:

Write xy = c, Manipulating the 3 inequalities given, we have

y ≤ -2x + 10

y ≤ -0.5x + 7

y ≥ -x + 6

Manipulating the 3 inequalities given, we have

c ≤ -2x^2 + 10x

c ≤ -0.5x^2 + 7x

c ≥ -x^2 + 6x

Completing the square, we have:

c ≤ 25/2 - 2(x-5/2)^2

c ≤ 49/2 - (1/2) (x-7)^2

c ≥ 9 - (x-3)^2

Joining them, the middle ineqality is redundant,

then max(c) = 25/2 when x = 5/2.

QED

#15 ASDFGH
21/03/24 16:38

台灣省著名數學Youtuber聯同大陸數學教師批評香港DSE數學:太簡單,課程太少,只有台灣/大陸的初中程度

- 分享自 LIHKG 討論區

成班DSE雞夜郎自大

事實係,台灣省同大陸高考AM-GM不等式係必修

而且所有deductive geometry, 包括circles,

全部都係喺中三淘汰試(中考)必修

#16 ASDFGH
21/03/24 16:39

AI玩到higher math, 豬乸都會爬上樹

#17 ASDFGH
21/03/24 16:54

就算唔用大陸高考試題,

淨係用小學程度數學都可以玩死班DSE雞:

1. What is the use of HCF and LCM?

2. Rewrite 1894 into Roman numeral.

3. In the integration ∫ 1/x dx = ln|x|+c, why can't we simply write ln(x) + c instead?

4. What is the problem if we write x > i y?

#18 ASDFGH
21/03/24 16:57

再玩埋dimensional analysis:

1. Why are trigonometric functions always dimensionless?

2. What is the geometric significance if we integrate a rate of change?

3. Why can we differentiate e^x infinitely?

#19 ASDFGH
21/03/24 17:24

基本上,DSE同2005之後嘅Pure Math係相當低能

俾完個algorithm 你,之後就係鳩計

例如, integration by part就係睇完例子就開始計

計嗰個全部都不求甚解

最離譜嘅係,

大學Thomas Calculus 有題嘅LIATE rule,

中學教科書全部隻字不提:

In this light, 2003年之後嘅一埋理科狀完,

佢地讀嘅數拎嘅A可謂相當庸碌,

直頭唔知自己計嗰條數係為乜

#20 ASDFGH
21/03/24 17:28

既然中學計數唔需要思考只需要gimmick,

亞洲學生想同讀IBDP嘅西方精英鬥?

後者平時上堂仲chur 過英文GCE

難為一眾井底之蛙仲日日拎自己公開試成積打飛機

#21 ASDFGH
21/03/24 17:29

既然中學計數唔需要思考只需要gimmick,

亞洲學生想同讀IBDP嘅西方精英鬥?

後者平時上堂仲chur 過英文GCE

難為一眾井底之蛙仲日日拎自己公開試成積打飛機

後者平時上堂仲chur 過英GCE

#22 ASDFGH
21/03/24 17:29

基本上,DSE同2005之後嘅Pure Math係相當低能

俾完個algorithm 你,之後就係鳩計

例如, integration by part就係睇完例子就開始計

計嗰個全部都不求甚解

最離譜嘅係,

大學Thomas Calculus 有題嘅LIATE rule,

中學教科書全部隻字不提:

In this light, 2003年之後嘅一埋理科狀完,

佢地讀嘅數拎嘅A可謂相當庸碌,

直頭唔知自己計嗰條數係為乜

In this light, 2003年之後嘅一埋理科狀

佢地讀嘅數拎嘅A可謂相當碌,

直頭唔知自己計嗰條數係為乜

#23 ASDFGH
21/03/24 17:30

基本上,DSE同2005之後嘅Pure Math係相當低能

俾完個algorithm 你,之後就係鳩計

例如, integration by part就係睇完例子就開始計

計嗰個全部都不求甚解

最離譜嘅係,

大學Thomas Calculus 有題嘅LIATE rule,

中學教科書全部隻字不提:

In this light, 2003年之後嘅一埋理科狀完,

佢地讀嘅數拎嘅A可謂相當庸碌,

直頭唔知自己計嗰條數係為乜

大學Thomas Calculus 有嘅LIATE rule,

中學教科書全部隻字不提:

#24 ASDFGH
21/03/24 17:31

今日嘅DSE M2,

連Properties of determinants 都唔考

想大學讀工程嘅師弟真係祝你好運

#25 ASDFGH
21/03/24 17:39

簡單嚟講,

香港教數嘅textbooks同本土reference books,

好多都寫得好撚差

係差到連數學歸納法嘅presentation都寫錯

出版社日日誤人子弟,教師照copy試題庫

只想講,各位學生唔好等人餵,

唔識執生真係會死得人多架

#26 ASDFGH
21/03/24 19:58

基本上,DSE同2005之後嘅Pure Math係相當低能

俾完個algorithm 你,之後就係鳩計

例如, integration by part就係睇完例子就開始計

計嗰個全部都不求甚解

最離譜嘅係,

大學Thomas Calculus 有題嘅LIATE rule,

中學教科書全部隻字不提:

In this light, 2003年之後嘅一埋理科狀完,

佢地讀嘅數拎嘅A可謂相當庸碌,

直頭唔知自己計嗰條數係為乜

大學Thomas Calculus 有嘅LIATE rule,

中學教科書全部隻字不提:

In this light, 2003年之後嘅一理科狀完,

佢地讀嘅數拎嘅A可謂相當庸碌,

直頭唔知自己計嗰條數係為乜

#27 ASDFGH
21/03/24 19:58

既然中學計數唔需要思考只需要gimmick,

亞洲學生想同讀IBDP嘅西方精英鬥?

後者平時上堂仲chur 過英文GCE

難為一眾井底之蛙仲日日拎自己公開試成積打飛機

後者平時上堂仲chur 過英GCE

難為一眾井底之蛙仲日日拎自己公開試成打飛機

#28 ASDFGH
21/03/24 20:01

話就話大陸高考相當難,

但由2024新制開始就完全唔考Integration

想了解佢就自己搵大陸大學課件慢慢研究

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