Math Problem Statement

Solve

Solution

Let's solve the given problem step-by-step:

Given Function:

f(x)=x3f(x) = x^3

Transformed Function:

g(x)=a[k(xd)]3+cg(x) = a \left[ k(x - d) \right]^3 + c

We'll choose the following values for the parameters:

  • a=2a = 2 (vertical stretch by a factor of 2)
  • k=1k = 1 (no horizontal stretch or compression)
  • d=3d = 3 (horizontal shift to the right by 3 units)
  • c=1c = -1 (vertical shift downward by 1 unit)

Transformed Function Equation:

g(x)=2[1(x3)]31=2(x3)31g(x) = 2[1(x - 3)]^3 - 1 = 2(x - 3)^3 - 1

Describe the Transformations:

  1. Vertical Stretch: The graph is stretched vertically by a factor of 2.
  2. Horizontal Shift: The graph is shifted 3 units to the right.
  3. Vertical Shift: The graph is shifted 1 unit downward.

Key Points Transformation:

Let's start with some key points from f(x)=x3f(x) = x^3:

  • Original points: (1,1)(-1, -1), (0,0)(0, 0), (1,1)(1, 1), (2,8)(2, 8)

Apply the transformations to these points:

  1. For (1,1)(-1, -1):

    • Horizontal shift: (1+3,1)=(2,1)(-1 + 3, -1) = (2, -1)
    • Vertical stretch: (1)×2=2(-1) \times 2 = -2
    • Vertical shift: 21=3-2 - 1 = -3
    • New point: (2,3)(2, -3)
  2. For (0,0)(0, 0):

    • Horizontal shift: (0+3,0)=(3,0)(0 + 3, 0) = (3, 0)
    • Vertical stretch: 0×2=00 \times 2 = 0
    • Vertical shift: 01=10 - 1 = -1
    • New point: (3,1)(3, -1)
  3. For (1,1)(1, 1):

    • Horizontal shift: (1+3,1)=(4,1)(1 + 3, 1) = (4, 1)
    • Vertical stretch: 1×2=21 \times 2 = 2
    • Vertical shift: 21=12 - 1 = 1
    • New point: (4,1)(4, 1)
  4. For (2,8)(2, 8):

    • Horizontal shift: (2+3,8)=(5,8)(2 + 3, 8) = (5, 8)
    • Vertical stretch: 8×2=168 \times 2 = 16
    • Vertical shift: 161=1516 - 1 = 15
    • New point: (5,15)(5, 15)

Graphing the Transformed Function:

  1. Plot the new points: (2,3)(2, -3), (3,1)(3, -1), (4,1)(4, 1), (5,15)(5, 15)
  2. Draw the curve passing through these points to represent the function g(x)=2(x3)31g(x) = 2(x - 3)^3 - 1

Here is a summary to fill in the table:

  • a=2a = 2
  • k=1k = 1
  • d=3d = 3
  • c=1c = -1
  • Transformed function equation: g(x)=2(x3)31g(x) = 2(x - 3)^3 - 1

Graph:

(You would need to plot this on the provided graph paper.)

Would you like more details or have any questions?

Here are 8 related questions to expand your understanding:

  1. What would the graph look like if a=2a = -2 instead of 22?
  2. How does changing kk from 11 to 0.50.5 affect the graph?
  3. What if dd were a negative value?
  4. How does the value of cc influence the graph's position?
  5. Can you describe the transformations if a=1a = 1, k=2k = 2, d=0d = 0, and c=3c = 3?
  6. What are the key points if the original function is f(x)=x2f(x) = x^2 instead?
  7. How do you determine the new coordinates of a point after transformation?
  8. What are the effects of combining multiple transformations in one function?

Tip:

When graphing transformed functions, always start with the base function and apply transformations step-by-step for accuracy.

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Math Problem Analysis

Mathematical Concepts

Functions
Transformations

Formulas

Transformed function equation: g(x) = a [ k(x - d) ]^3 + c

Theorems

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Suitable Grade Level

Grades 10-12