翰林提供学术活动、国际课程、科研项目一站式留学背景提升服务!
400 888 0080
首页
国际少培课程
国际课程
A-Level课程辅导
IB课程辅导
AP课程辅导
IGCSE课程辅导
美高课程辅导
国际竞赛
理科国际竞赛
商科国际竞赛
STEM科创竞赛
文社科国际竞赛
丘成桐中学生科学奖
热门资讯
学校动态
赛事动态
课程动态
真题资料
关于我们
学员奖项
2024-至今年度奖项
2022-2023年度奖项
2020-2021年度奖项
翰林导师
加入我们
商务合作
Home
»
国际课程
»
A-level课程
»
Details
Edexcel A Level Maths: Pure:复习笔记3.1.1 Basic Coordinate Geometry
Category:
A-level课程
,
国际课程
,
教材笔记
,
福利干货
Date: 2022年10月27日 上午9:06
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 -y coordinate system
Using coordinates you can
Calculate the distance between two points (length of a line)
Divide lines in m:n ratio,
Find the mid-point of a line
Calculate the area of a triangle (or other shapes)
Find missing coordinates using any of the above
Most of these involve working with straight line graphs
Straight line graphs are of the form y = mx + c
m is the gradient
c is the y-axis intercept
Part of a straight line is called a line segment
How do I find the length of a line (segment)?
By finding the distance, d, between two points (x1, y1) (x2, y2)
Pythagoras’ Theorem (a2 = b2 + c2) is used to find the length of a line
How do I find the midpoint of a line (segment)?
M is often used as the midpoint between two points (x1, y1) (x2, y2)
It is the average of both the x and y coordinates
Exam Tip
Work with the square of a distance for as long as possible as this avoids early rounding errors and surds.
Only square root when forced to or for a final answer, and use the ANS button (and other memory features) on your calculator.
Worked Example
转载自savemyexams
Previous post: Edexcel A Level Maths: Pure:复习笔记2.13.1 Further Modelling with Functions
Next post: Edexcel A Level Maths: Pure:复习笔记3.1.2 Parallel & Perpendicular Gradients
2024年AMC数学竞赛报名开启!
CNEC挑战赛报名启动!点击咨询!
站内搜索
在线登记
最新发布
超详细2025美高申请时间规划表!
IB文科课程有哪些应该怎么学?学习策略分享
A-Level文科类科目有哪些?应该怎么选?
国际生新生必看教你如何拿捏IGCSE课程
A-Level经济学全面解析与A*攻略
2024AMC10竞赛问题汇总、看完轻松冲刺前1%
AMC10的A卷、B卷该怎么选?
适合中国低龄宝宝们体质的袋鼠数学竞赛课程来咯~
热门标签
AMC
物理碗
AMC8
BBO
AMC10
欧几里得数学竞赛
Physics Bowl
John Locke
AMC12
USABO
USACO
PhysicsBowl
AIME
NEC
袋鼠数学竞赛
BPhO
丘成桐中学科学奖
欧几里得
HiMCM美国高中数学建模竞赛
UKChO
AP
SIC
Euclid
Brain bee
IEO
© 2024. All Rights Reserved.
沪ICP备2023009024号-1
国际竞赛
了解背提项目
国际课程
商务合作
Go to top