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February 24th, 2015

2/24/2015

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Lesson
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February 18th, 2015

2/18/2015

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Today we looked at: 
  • 2014 LC question on Complex Numbers 
  • Introduction to Statistics.

Please look over the revision videos.
Class Notes 18-2-2015
Statistics Revision Videos
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February 16th, 2015

2/16/2015

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Looked at Complex Numbers.
Key ideas:
  • Powers of i
  • Adding and subtracting complex numbers
  • Multiplying Complex numbers
  • Dividing Complex Numbers
  • Argand Diagram (Complex Plane)
  • Modulus (Absolute Value)
  • Transformations
  • Quadratic Equations with complex roots

Have a look at the videos here if you need reminding and try the linked questions to check your understanding.
HW:
  1. Work through the KA (Khan Academy) Questions linked under the videos.
  2. Try the following Paper 1 LC Exam Questions: 
  • 2014 Q.2
  • 2013 Q.1
  • 2012 Q.2 c & Q.3
KA Powers of i
KA Adding & Subtracting Complex Numbers
KA Multiplying Complex Numbers
KA Dividing Complex Numbers
KA Argand Diagram
KA Modulus of a Complex Number
KA Complex Quadratic Solutions
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