Math Problem Statement

Given the base function f(x) = x^2, what type of transformation are the functions g(x) = (x + 3)^2 and g(x) = x^2 + 3?

Solution

The problem provided asks to analyze two functions based on the base function f(x)=x2f(x) = x^2. Let's break down each part:

A) g(x)=(x+3)2g(x) = (x + 3)^2

This function is a transformation of the base function f(x)=x2f(x) = x^2. Specifically, it represents a horizontal shift of the graph of f(x)f(x). The term (x+3)(x + 3) shifts the graph 3 units to the left.

  • Horizontal transformations follow the rule f(xh)f(x - h), where hh determines the direction of the shift (left or right). Here, h=3h = -3, so the shift is to the left.

B) g(x)=x2+3g(x) = x^2 + 3

This function is a vertical shift of the base function f(x)=x2f(x) = x^2. The addition of +3+3 outside the square moves the entire graph 3 units upward.

  • Vertical transformations occur when a constant is added outside of the base function, affecting the vertical position of the graph.

Answers:

  • A) g(x)=(x+3)2g(x) = (x + 3)^2 is a horizontal shift to the left by 3 units.
  • B) g(x)=x2+3g(x) = x^2 + 3 is a vertical shift upward by 3 units.

Do you need further details on how transformations work?

Here are 5 related questions to deepen understanding:

  1. What would happen if g(x)=(x4)2g(x) = (x - 4)^2?
  2. How does adding a negative constant outside the function, like g(x)=x22g(x) = x^2 - 2, affect the graph?
  3. What is the effect of multiplying the function f(x)f(x) by a constant?
  4. How does the transformation change if we have g(x)=(x+3)2+5g(x) = (x + 3)^2 + 5?
  5. What is the difference between a horizontal stretch and a shift?

Tip: Horizontal transformations affect the input (inside the parentheses), while vertical transformations affect the output (outside the function).

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Math Problem Analysis

Mathematical Concepts

Function Transformations
Quadratic Functions
Shifts

Formulas

g(x) = (x + h)^2 for horizontal shifts
g(x) = x^2 + k for vertical shifts

Theorems

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Suitable Grade Level

Grades 9-12