Arithmetic Geometric Progression Discussion

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About Arithmetic & Geometric Progression

Please post any related info/things to discuss here

To Do

• Guidance for every exercise
• Add more questions for practice in exercise 2
• Complete Past Year Questions
• Some more challenging questions from books (to be put at misc questions)

--Senghong79 08:37, 22 February 2010 (UTC)

Problems Observed

• Quite a number of student still couldn't prove a series is an AP/GP
• Students with weak algebra basics struggle a lot with some calculations

--Senghong79 08:37, 22 February 2010 (UTC)

Exercises

• Exercise 1
  • 3) first term & common difference chosen first, the sequence written out and selected information calculated
  • 4) a little trial and error was required
  • 5) chosen first term and common difference substituted into sum formula
  • 7) other possible variations
    • can be divided by and but not both
    • can be divided by but not
    • is a factor of or vice versa
• Exercise 2
  • 2) first term & common ratio chosen first, the sequence written out and selected information calculated
  • 3) chosen first term and common ratio substituted into sum formula