Herman Yeung 電子書

M2 - Intensive Training A (HK$99)

1. Odd, Even functions 奇函數、偶函數 

2. Summation, Product signs 連加、連乘符號 

3. Mathematical Induction 數學歸納法 

4. Binomial Theorem 二項式定理 

5. Trigonometry 三角學 

M2 - Intensive Training B (HK$99)

1. e and Limit e與極限 

2. First principle 基本原理 

3. Rule of Differentiation 微分規則 

4. Application of Differentiation - Tangents 微分應用 - 切線 

M2 - Intensive Training C (HK$129)

1. Application of Differentiation - Rate of change 微分應用 - 改變率 

2. Application of Differentiation - Maximum and Minimum 微分應用 - 極大值和極小值  

3. Application of Differentiation - Greatest and Least 微分應用 - 最大值和最小值 

4. Application of Differentiation - 2 variables 微分應用 - 2變數

5. Application of Differentiation - Curve Sketching 微分應用 - 曲線描繪

6. Differentiation x Inequality 微分 x 不等式 

M2 - Intensive Training D (HK$99)

1. Rule of integration 積分規則 

2. Integration x compound angle formula 積分 x 複角 

3. High power trigonometry integration 三角學高次方的積分 

4. Trigonometric substitution 三角代換積分法 

5. t-formula t-公式 

6. Integration by part 分部積分法 

7. Reduction formula 歸約公式 

8. Integration x odd, even function 積分 x 奇偶函數 

9. Definite integral 定積分 

M2 - Intensive Training E (HK$129)

1. Application of integration - Area 積分應用 - 面積 

2. Application of integration - Volume 積分應用 - 體積 

3. Leakage problem 漏水問題 

M2 - Intensive Training F (HK$99)

1.    Determinant 行列式 

2.    Matrix – “+ – x” 矩陣 – “+ – x” 

3.    Matrix – Inverse Matrix 矩陣 – 逆矩陣 

4.    Matrix – Power of n 矩陣 – n次方 

5.    System of Linear equation – Non-homogeneous equation 線性方程組 – 三元非齊次方程組 

6.    System of Linear equation – Homogeneous equation 線性方程組 – 三元齊次方程組 

7.    System of Linear equation – Application 線性方程組 – 應用題

M2 - Intensive Training G (HK$99)

1.    2D Vector 平面向量 

2.    3D Vector 立體向量 

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HKDSE Past Paper Solution :

Maths 數學 12年 PP Solution (最新 2023)  (HK$ 49.90)

Maths 數學 (M2) 12年 PP Solution (最新 2023)  (HK$ 49.90)

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Calculus 手稿電子書  (HK$ 199)

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HKDSE Chemistry 化學 的電子書 :

Chemistry - Calculation Training A (HK$49)

Type 1:    Isotopes 同位素
Type 2:    Relative atomic masses 相對原子質量
Type 3:    Avogadro’s number 亞佛加德羅數
Type 4:    Percentage of mass 質量百分比
Type 5:    Number of atoms / ions / molecules 原子/離子/分子的數目
Type 6:    Empirical formula / Chemical formula 實驗式 / 化學式
Type 7:    Mass of reactant / product 反應物 / 生成物的質量

Chemistry - Calculation Training B
Chemistry - Calculation Training C
Chemistry - Calculation Training D

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HKDSE Economics 背 definition 的電子書 :

(中英對照版 - 230頁)  (HK$19.90)
(純英文版 - 159頁)  (HK$19.90)
(純中文版 - 159頁) (HK$19.90)

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Herman Yeung F.3 Maths 中三數學 (Exercise 3C) (500題) (HK$199)

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HKDSE Physics 臨考前 吃到飽 系列 (Question & Suggested Solution)  (HK$79.90)

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DSE M1 臨考前 吃到飽 系列 (Question & Suggested Solution)  (HK$49.90)

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更多電子書陸續推出，敬請留意

生命簡史 古生物放置攻略 - 海生爬行動物

楯齒龍 Placodus

生存年代︰   2.5 至 2.3 億年前

體長︰            1 至 3 米

分佈區域︰    中生代海洋 Mesozoic Ocean

目Order︰     盾齒龍目 Placodontia

楯齒龍用突出的前齒，將水底無脊椎動物的堅硬外殼拉扯出來，並用後方的平坦牙齒，將獵物外殼壓碎。

楯齒龍是陸地動物，但到海中尋找軟體動物、腕足動物和甲殼類作為食物。

Placodus used their protruding front teeth to pull out the hard shells of underwater invertebrates, and crushed the shells of prey with the flat teeth at the back.

Placodus is a land animal, but it goes to the sea to find molluscs, brachiopods and crustaceans as food.

 

幻龍 Nothosaurus

生存年代︰   2.3 至 2 億年前

體長︰            3 米

分佈區域︰    中生代海洋 Mesozoic Ocean

目Order︰     幻龍目 Nothosauroidea

幻龍緩慢跟踪獵物，利用針狀牙齒的長頜部捕抓魚類與其他海中動物。

幻龍是半海生動物，它們可能過著類似現代海豹的生活。

Nothosaurus slowly follows its prey, using its long jaws with needle-like teeth to catch fish and other sea animals.

Nothosaurus are semi-sea animals, and they may live a life similar to modern seals.

 

海龍 Thalattosaurus

生存年代︰   2.3 至 2 億年前

體長︰            4 米

分佈區域︰    中生代海洋Mesozoic Ocean

目 Order︰    海龍目Thalattosauria

海龍類外表似大型蜥蝪，有長而側向平坦的尾巴，適合生存於海中環境。

海龍擁有大眼睛，可讓它們的深水中視力更好，而眼睛周圍有骨環，可防止眼睛在深水中遭巨大水壓壓碎。

Thalattosaurus resemble large lizards with long and laterally flat tails, which are suitable for living in the sea.

Thalattosaurus have big eyes, allowing them to have better vision in deep water, and there are bone rings around the eyes to prevent the eyes from being crushed by huge pressure in deep water.

 

海鱷 Pelagosaurus

生存年代︰   1.9 至 1.45 億年前

體長︰            7 米

分佈區域︰    中生代海洋Mesozoic Ocean

目Order︰     海鱷亞目Thalattosuchia

海鱷性情兇猛，四肢演化成了鰭肢狀，尾巴的形狀像魚鰭，在海中的行動相當敏捷。

海鱷從其出現開始，就一直受到魚龍、上龍、滄龍等天敵的威脅，直至滅亡也沒能翻身。

Pelagosaurus has a fierce temperament.  Its limbs have evolved into flippers, and its tail is shaped like a fin, it moves very quickly in the sea.

Since its emergence, Pelagosaurus has been threatened by natural enemies such as Temnodontosaurus, Pliosaurus and Mosasauroidea, and has not been able to turn over till its extinction.

 

魚龍 Temnodontosaurus

生存年代︰   2.5 至 0.9 億年前

體長︰            2至23 米

分佈區域︰    中生代海洋Mesozoic Ocean

目Order︰     魚龍目Lchthyosauria

魚龍的遊速可以達到每小時40公里，鯺狀的四肢可能被用來起穩定以及控制轉向的作用，魚龍的主食可能是魚類。

雖然魚龍的外表看似魚類，但它們並不屬於魚類。

The swimming speed of Temnodontosaurus can reach 40 kilometers per hour.  The fin-like limbs may be used to stabilize and control steering.  The staple food of ichthyosaurs may be fish.

Although Temnodontosaurus look like fish, they are not fish.

  

蛇頸龍 Plesiosaurus

生存年代︰   2 至 0.9 億年前

體長︰            3至20 米

分佈區域︰    中生代海洋Mesozoic Ocean

目Order︰     蛇頸龍亞目 Plesiosauroidea

蛇頸龍以U形的嘴部、銳利的牙齒捕抓獵物，它們以兩對鰭腳推動身體，尾巴因為太短而不能推動身體前進。 在水中游泳時，頸部可能有控制制方向的功能。

蛇頸龍的頸椎骨基本不能活動，只能做極小弧度的擺動和升降，幾乎不能抬高脖子。

Plesiosaurus uses a U-shaped mouth and sharp teeth to catch prey.  They are two pairs of fins to push the body.  The tail is too short to push the body forward. 

When swimming in the water, the neck may have the function of controlling direction.

The cervical vertebrae of Plesiosaurus are basically unable to move, and can only swing and lift in a very small arc, and they can hardly raise the neck.

 

上龍 Pliosaurus

生存年代︰   2 至 0.7 億年前

體長︰            4至15 米

分佈區域︰    中生代海洋Mesozoic Ocean

目Order︰     上龍亞目 Pliosauroidea

上龍特徵是短頸部、長頭部、體型大、呈流線型、行動快速且兇猛。

上龍類是肉食性動物，長而強壯的頜部有多排銳利的牙齒，可能獵食魚龍或蛇頸龍。

Pliosaurus is characterized by a short neck, a long head, a large body, a streamlined shape, fast action and fierceness.

Pliosaurus are carnivorous animals, with long and strong jaws with multiple sharp teeth, which may hunt Temnodontosaurus or Plesiosaurus.

   

滄龍 Mosasauroidea

生存年代︰   0.7 至 0.65 億年前

體長︰            3至15 米

分佈區域︰    中生代海洋Mesozoic Ocean

科Family︰    滄龍超科 Mosasauroidea

滄龍有雙鉸鏈狀的頜部、頭顱骨，能將獵物整個吞下，身體形狀類似現代巨蜥，但更為修長、流線性。

滄龍類在白堊紀晚期的大海中迅速擴張，成為頂級掠食者，在很短的時間內完全取代了上龍的生態位並導致其完全滅絕。

Mosasauroidea has a double-hinged jaw and skull, which can swallow its prey whole.  Its body shape is similar to modern monitor lizards, but it is more slender and streamlined.

Mosasauroidea expanded rapidly in the sea in the late Cretaceous and became top predators, completely replacing the niche of Pliosaurus within a short period of time and leading to its complete extinction.

資料來源︰生命簡史 古生物放置 遊戲的資料

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