Modelling with Differentiation What can be modelled with differentiation? Recall that differentiation is about the rate of change of a function and provides a way of finding minimum and maximum val...
Edexcel IGCSE Physics 复习笔记 4.1.4 Conduction, Convection & Radiation Conduction Thermal energy transfers from hotter areas to cooler areas by the processes of: Conduction Convection R...
ncreasing & Decreasing Functions What are increasing and decreasing functions? A function, f(x), is increasing if f'(x) > 0 This means the value of the function (‘output’) increases as x inc...
Edexcel IGCSE Physics 复习笔记 4.1.3 Efficiency Efficiency The efficiency of a system is a measure of how well energy is transferred in a system Efficiency is defined as: The ratio of...
Edexcel IGCSE Physics 复习笔记 4.1.2 Conservation of Energy Conservation of Energy The principle of conservation of energy states that: Energy cannot be created or destroyed, it can o...
Introduction to Derivatives Before introducing a derivative, an understanding of a limit is helpful What is a limit? What might I be asked about limits? You may be asked to use your GDC to plot the...
Edexcel IGCSE Physics 复习笔记 4.1.1 Energy Stores & Transfers Energy Stores & Transfers Energy can be stored in different ways, and there are changes in the way it is stored when a ...
Edexcel IGCSE Physics 复习笔记 3.3.4 Pitch & Loudness Pitch The pitch of a sound is related to the frequency of the vibrating source of sound waves If the frequency of vibration is high,...
Edexcel IGCSE Physics 复习笔记 3.3.3 Core Practical: Using an Oscilloscope Core Practical 7: Using an Oscilloscope Aim of the Experiment The aim of this experiment is to investigate the freq...
