AQA 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 ...
IB DP Maths: AA SL復習筆記5.2.4 Further Applications of Differentiation
Stationary Points & Turning Points What is the difference between a stationary point and a turning point? A?stationary point?is a point at which the?gradient function?is equal to zero The?tange...
IB DP Maths: AA SL復習筆記5.2.3 Second Order Derivatives
Second Order Derivatives What is the second order derivative of a function? If you?differentiate?the?derivative?of a?function?(i.e. differentiate the function a second time) you get the?second orde...
IB DP Maths: AA SL復習筆記5.2.2 Techniques of Differentiation
Chain Rule What is the chain rule? How do I know when to use the chain rule? How do I use the chain rule? Are there any standard results for using chain rule? Exam Tip You should aim to be able to ...
Edexcel IGCSE Physics 復習筆記 2.1.3 Resistance
Edexcel IGCSE Physics 復習筆記 2.1.3 Resistance Calculating Current, Resistance & Potential Difference Resistance is defined as the?opposition?to current: The higher the resistance of a ...
Edexcel IGCSE Physics 復習筆記 2.1.2 Voltage & Energy
Edexcel IGCSE Physics 復習筆記 2.1.2 Voltage & Energy Voltage The terminals of a cell make one end of the circuit?positive?and the other?negative This sets up a?potential difference?acro...
Edexcel IGCSE Physics 復習筆記 2.1.1 Charge & Current
Edexcel IGCSE Physics 復習筆記 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?count...
Edexcel IGCSE Physics 復習筆記 1.4.3 Centre of Gravity
Edexcel IGCSE Physics 復習筆記 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...
