2023年Brain Bee脑科学大赛报名开启！
Brain Bee脑科学活动（International Brain Bee Championship）发源于美国，是一项面向全球青少年的课外挑战活动，旨在鼓励学生认识、研究人类大脑，今后从事生物、医学、心理、化学、计算机、人工智能等相关专业...
Edexcel A Level Maths: Pure:复习笔记4.1.1 Binomial Expansion
Binomial Expansion What is the binomial expansion? Look at the pattern Start at nC0, then nC1, nC2, etc Powers of a start at n and decrease by 1 Powers of b start at 0 and increase by 1 &nbs...
Edexcel A Level Maths: Pure:复习笔记3.2.5 Radius & Tangent
Radius & Tangent What is the relationship between tangents and radii? A tangent is a line that touches a circle at a single point but doesn't cut across the circle A tangent to a circle is perp...
Edexcel A Level Maths: Pure:复习笔记3.2.4 Angle in a Semicircle
Angle in a Semicircle What is the angle in a semicircle property? It is always possible to draw a unique circle through the three vertices of a triangle – this is called the circumcircle of the tri...
Edexcel A Level Maths: Pure:复习笔记3.2.3 Bisection of Chords
Bisection of Chords How can I find the equation of a perpendicular bisector? The perpendicular bisector of a line segment: is perpendicular to the line segment goes through the midpoint of the line...
Edexcel A Level Maths: Pure:复习笔记3.2.2 Finding the Centre & Radius
Finding the Centre & Radius How can I find the centre and radius from any form of the equation of a circle? A circle equation in a different form can always be rearranged into (x- a)2 + (y - b)...
Edexcel A Level Maths: Pure:复习笔记3.2.1 Equation of a Circle
Equation of a Circle What do I need to know about the equation of a circle? A circle with centre (a, b) and radius r has the equation You need to be able to find the centre and radius of a circle ...
Edexcel A Level Maths: Pure:复习笔记3.1.4 Modelling with Straight Lines
Modelling with Straight Lines What is modelling with straight lines? Modelling means applying the mathematics to a real-life situation The model is used to find or predict future values Models will...
Edexcel A Level Maths: Pure:复习笔记3.1.3 Equation of a Straight Line
Equation of a Straight Line What is the equation of a straight line? y = mx + c is the equation for any straight line m is gradient given by “difference in y” ÷ “difference in x” or dy/dx c is the ...
Edexcel A Level Maths: Pure:复习笔记3.1.2 Parallel & Perpendicular Gradients
Parallel & Perpendicular Gradients What are parallel lines? Parallel lines are equidistant meaning they never meet Parallel lines have equal gradients What are perpendicular lines? Perpendicula...
Edexcel A Level Maths: Pure:复习笔记3.1.1 Basic Coordinate Geometry
Basic Coordinate Geometry What is basic coordinate geometry? Basic coordinate geometry refers to working with points, lines and shapes on the coordinate axis Cartesian coordinates are simply the x ...
Edexcel A Level Maths: Pure:复习笔记2.13.1 Further Modelling with Functions
Further Modelling with Functions Assumptions, criticisms and refinements in modelling Modelling is a large part of A level mathematics Assumptions and refinements to models often need to be conside...
