Edexcel IGCSE Physics: Double Science 复习笔记：4.2.2 Gravitational Potential Energy Gravitational Potential Energy The gravitational potential energy (GPE) of an object (also known as its g...
Edexcel IGCSE Physics: Double Science 复习笔记：4.2.1 Work Done Work Done Whenever any work is done, energy gets transferred (mechanically) from one store to another The amount of energy tra...
Integrating with Trigonometric Identities What are trigonometric identities? Some are given in the formulae booklet Be sure to note the difference between the ± and ∓ symbols! How do I know which t...
Edexcel IGCSE Physics: Double Science 复习笔记：4.1.6 Reducing Energy Loss Reducing Energy Loss Energy loss can be reduced by doing one of two things: By reducing the amount of unwanted (was...
美国大联盟Math League是具有全球影响力的国际数学活动，纯英文命题（带在线翻译功能），同时挑战学生的数学和英文能力。在国际数学活动中占据独特的地位，每年吸引全世界众多具有国际视野的家长参与，我们一起更...
Edexcel IGCSE Physics: Double Science 复习笔记：4.1.5 Core Practical: Investigating Thermal Energy Core Practical 8: Investigating Thermal Energy Equipment List Resolution of measuring equip...
Harder Substitution What is integration by substitution? Make sure you are familiar with Reverse Chain Rule and Substitution (RCR) In more difficult questions the substitution will be given to you ...
Substitution (Reverse Chain Rule) What is integration by substitution? Make sure you are familiar with Chain Rule and Reverse Chain Rule In more awkward problems it is harder to spot the reverse ch...
f'(x)/f(x) Integrating fractions The technique for integrating fractions depends on the type of fraction For polynomial denominators see Integration using Partial Fractions If then y = ln |x| + c ...
Reverse Chain Rule What is the chain rule? The Chain Rule is a way of differentiating two (or more) functions In many simple cases the above formula/substitution is not needed The same can apply fo...
“全美一半以上的专业机构资助与认证” “数学类含金量最高的国际学术活动之一” “全球影响力最大的中学生数学学术活动之一” “藤校、G5名校的申请利器” 数学建模是什么？数学建模，就是根据实际问题来建立数学模型，...
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