CIE A Level Maths: Pure 3复习笔记8.1.1 Intro to Complex Numbers
Complex Numbers – Basics
What is an imaginary number?
What is a complex number?
Worked Example
Exam Tip
Complex Numbers – Basic Operations
How do I add and subtract complex numbers?
- When adding and subtracting complex numbers, simplify the real and imaginary parts separately
- Just like you would when collecting like terms in algebra and surds, or dealing with different components in vectors
How do I multiply complex numbers?
How do I deal with higher powers of i?
Worked Example
Exam Tip
- Most calculators used at A-Level can work with complex numbers and you can use these to check your working.
- You should still show your full working though to ensure you get all marks though.
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