Edexcel IGCSE Maths 复习笔记 2.9.1 Substitution
Edexcel IGCSE Maths 复习笔记 2.9.1 Substitution What is substitution? Substitution is where we replace letters in a formula with their values This allows you to find one other value that is in the ...
Edexcel IGCSE Maths 复习笔记 2.8.1 Proof/Reasoning - Algebraic
Edexcel IGCSE Maths 复习笔记 2.8.1 Proof/Reasoning - Algebraic What is proof? Proof is the process of showing something is true in every case, often by using algebra Given an algebraic expression… ...
Edexcel IGCSE Maths 复习笔记 2.7.1 Completing the Square
Edexcel IGCSE Maths 复习笔记 2.7.1 Completing the Square What is completing the square? “Completing the square” is something that can be done to a quadratic expression (to make it easier to work wi...
Edexcel IGCSE Maths 复习笔记 2.6.3 Algebraic Fractions - Multiplying & Dividing
Edexcel IGCSE Maths 复习笔记 2.6.3 Algebraic Fractions - Multiplying & Dividing What is an algebraic fraction? An algebraic fraction is simply a fraction with an algebraic expression on the top...
Edexcel IGCSE Maths 复习笔记 2.6.2 Algebraic Fractions - Simplifying Fractions
Edexcel IGCSE Maths 复习笔记 2.6.2 Algebraic Fractions - Simplifying Fractions What is an algebraic fraction? An algebraic fraction is simply a fraction with an algebraic expression on the top (num...
Edexcel IGCSE Maths 复习笔记 2.6.1 Algebraic Fractions - Adding & Subtracting
Edexcel IGCSE Maths 复习笔记 2.6.1 Algebraic Fractions - Adding & Subtracting What is an algebraic fraction? An algebraic fraction is simply a fraction with an algebraic expression on the top (...
Edexcel IGCSE Maths 复习笔记 2.5.2 Rearranging Formulae - Harder
Edexcel IGCSE Maths 复习笔记 2.5.2 Rearranging Formulae - Harder SIR! GROF GROBLET FIND ANSWER! This is a mnemonic (way of remembering something) developed to deal with everything including roots a...
AQA A Level Biology复习笔记2.6.4 AIDS
AIDS Symptoms of AIDS Immediately after infection with HIV people often suffer mild flu-like symptoms These symptoms pass and for a period of time infected people might not know they are inf...
AQA A Level Biology复习笔记2.6.3 HIV
HIV Transmission of HIV Human Immunodeficiency Virus is a retrovirus The HIV virus is not transmitted by a vector (unlike in malaria) The virus is unable to survive outside of the human body...
