上海交大附中IB中心開放2023級入學申請！
上海交通大學附屬中學IB課程中心作為上海市首批實驗性示范性一流高中，上海交大附中一直致力成為基礎教育領域改革的先鋒。上海交大附中IB中心開放2023級入學申請！ 交中IB 2023級新生招生計劃 招生人數：100-120...
Edexcel A Level Maths: Pure:復習筆記2.2.1 Quadratic Graphs
Quadratic Graphs What are quadratic graphs? The general equation of a quadratic graph is Their shape is called a parabola ("U" shape) Positive quadratics have a value of? ?so the parabola?is uprigh...
Edexcel A Level Maths: Pure:復習筆記2.1.3 Surds - Rationalising the Denominator
Surds - Rationalising the Denominator What does it mean to rationalise a denominator? Rationalising a denominator changes a fraction with surds in its denominator, into an equivalent fraction where...
Edexcel A Level Maths: Pure:復習筆記2.1.2 Manipulating Surds
Manipulating Surds What are surds? If?n?is a positive integer and is not a square number, then?√n?(or any multiple of?√n?) is a?surd Surds are examples of?irrational numbers What do I need to know ...
Edexcel A Level Maths: Pure:復習筆記2.1.1 Laws of Indices
Laws of Indices What do I need to know about laws of indices? Laws of indices (or index laws – 'index' is the singular, 'indices' is the plural) allow you to simplify and manipulate expressions inv...
Edexcel A Level Maths: Pure:復習筆記1.2.1 Proof by Contradiction
Proof by Contradiction What is proof by contradiction? A proof by contradiction assumes the?opposite?result is true Then, through a series of logical steps, shows that this cannot be so How do I do...
Edexcel A Level Maths: Pure:復習筆記1.1.4 Disproof by Counter Example
Disproof by Counter Example What is disproof by counter-example? Disproof by counter-examples involves finding a value that does?not?work for the given statement That value is called a?counter-exam...
Edexcel A Level Maths: Pure:復習筆記1.1.3 Proof by Exhaustion
Proof by Exhaustion What is proof by exhaustion? Proof by exhaustion is a way to show that the desired result works for every allowed value How do I prove a result by exhaustion? Using proof by exh...
Edexcel A Level Maths: Pure:復習筆記1.1.2 Proof by Deduction
Proof by Deduction What is proof by deduction? Proof by deduction is when a mathematical and logical argument is used to shows whether or not a result is true How to do proof by deduction ?Y...
Edexcel A Level Maths: Pure:復習筆記1.1.1 Language of Proof
Language of Proof What is proof? Proof is a series of logical steps which show whether a result is?true?or not for a set of specified numbers e.g. All intigers, all even numbers etc Notation in pro...
Edexcel A Level Maths: Mechanics:復習筆記4.1.5 Using Moments - Harder
Moments - Ladder Problems How do I model ladder problems? We can model the ladder as a?rod There will be?two?(likely different)?reaction?forces a?vertical reaction?force Rf?between the?bottom of th...
Edexcel A Level Maths: Mechanics:復習筆記4.1.4 Tilting
Tilting What does it mean if a rod is on the point of tilting? A rod will?tilt?(rotate) about a?pivot?if the?resultant moment?about that pivot is?non-zero Examples of tilting: A person walking a pl...
