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AMO 2024 – Secondary 4 (Grade 10) Question 2

AMO · AMO 2024 – Secondary 4 (Grade 10)

Question 2

The transformation $T(x,y)=(x/3,y/2)$ maps the ellipse $x^2/9+y^2/4=1$ to a new shape. What is the area of the image?

Question illustration
  1. $6\pi$
  2. $3\pi/5$
  3. $\pi$
  4. $2\pi$