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Graphing functions using transformations

Aim:

To analyse the changes in the graph of a function according to some slight changes in the definition .

Concepts:

  1. Graph of Function

Discussion:

  1. If we know the graph of the function f(x) we can obtain the graphs of the functions f(x)+a and f(x+a) by translation.
  2. This idea helps us to imagine the graphs of some functions in the graph of the base function is known

Procedure:

  1. Draw the graph of f(x)=x^2
  2. Create a number slider a with increment 0.1
  3. Draw the graph of g(x)=f(x+a) (Input f+a)
  4. Observe how the graph of g(x) changes according to a.

Shifting of Graphs f(x)+a

Do the above observations for different functions such as

1.x^3 2. x^4

Activity 1:

Procedure:

  1. Draw the graph of f(x)=x^2
  2. Create a number slider a with increment 0.1
  3. Draw the graph of g(x)=f(x+a) (Input f+a)
  4. Observe how the graph of g(x) changes according to a.

Shifting of Graphs f(x+a)

Do the above observations for different functions such as

1.x^3 2.x^4

Activity 2: