Edexcel IGCSE Physics 复习笔记 2.1.1 Charge & Current
Edexcel IGCSE Physics 复习笔记 2.1.1 Charge & Current Current Electric current is defined as the rate of flow charge In other words, the size of an electric current is the amount of char...
AQA A Level Maths: Pure复习笔记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 count...
Edexcel IGCSE Physics 复习笔记 1.4.3 Centre of Gravity
Edexcel IGCSE Physics 复习笔记 1.4.3 Centre of Gravity Centre of Gravity The centre of gravity of an object (sometimes called the centre of mass) is defined as: The point through which the weight o...
AQA A Level Maths: Pure复习笔记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 IGCSE Physics 复习笔记 1.4.2 The Principle of Moments
Edexcel IGCSE Physics 复习笔记 1.4.2 The Principle of Moments The Principle of Moments The principle of moments states that: If an object is balanced, the total clockwise moment about...
IB DP Maths: AA SL复习笔记5.2.1 Differentiating Special Functions
Differentiating Trig Functions How do I differentiate sin and cos? For calculus with trigonometric functions angles must be measured in radians Ensure you know how to change the angle mode on your ...
AQA A Level Maths: Pure复习笔记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 &n...
IB DP Maths: AA SL复习笔记5.1.2 Applications of Differentiation
Increasing & Decreasing Functions What are increasing and decreasing functions? How do I find where functions are increasing, decreasing or stationary? To identify the intervals on which a func...
AQA A Level Maths: Pure复习笔记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...
