11 SL Combinations of Transformations

For homework before next class, answer the following question.

Does the order in which we apply transformations matter? For example, if I begin with the graph of \(y=f(x)\), and I

  • (A) translate by 2 units to the left, and then
  • (B) stretch vertically by a factor of 3,

will I always get the same result as I would if I had begun with the graph of \(y=f(x)\), and I

  • (B) stretch vertically by a factor of 3, and then
  • (A) translate by 2 units to the left?

What if, instead of stretching vertically by a factor of 3, I stretch horizontally by a factor of 3? Does order matter in that case?

Consideration of the function \(f(x)=x^3-2x^2\) may help here.

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