Modelling with Differential Equations What can be modelled with differential equations? Derivative terms like are “rates of change” There are many situations that involve “change” Temperature R...
Edexcel IGCSE Physics: Double Science 复习笔记：5.1.1 Density Density Density is defined as: The mass per unit volume of a material Objects made from low density materials typi...
Separation of Variables What does separation of variables mean? Many differential equations used in modelling either … … have two variables involved (ie x and y), or, ... involve a function of the ...
Particular Solutions What is a particular solution? Ensure you are familiar with General Solutions first With extra information, the constant of integration, c, can be found This means the particul...
General Solutions What is a differential equation? Any equation, involving a derivative term, is a differential equation Equations involving only first derivative terms are called first order diffe...
Decision Making What is meant by integration and decision making? The hardest part of integration is deciding which technique to use There are lots of them! How do I know which integration method t...
Edexcel IGCSE Physics: Double Science 复习笔记：4.2.5 Power Power Machines, such as car engines, transfer energy from one type to another every second The rate of this energy transfer, or th...
Area between 2 curves What is the area between two curves? Ensure you are familiar with … Area under a curve Area between a line and a curve In general find the definite integral of “upper curve” –...
Edexcel IGCSE Physics: Double Science 复习笔记：4.2.4 Work, GPE & KE Work, GPE & KE Whenever any work is done, energy gets transferred (mechanically) from one store to another This i...
