Solve for (x) in F times G: (x - 3)^2 + 2 or x^2 - 6x + 11

  • Context: High School 
  • Thread starter Thread starter sfeld
  • Start date Start date
Click For Summary
SUMMARY

The discussion centers on finding the composite function fg(x) for F(x) = x^2 + 2 and G(x) = x - 3. The correct interpretation of "F times G" is clarified as the composition of functions, denoted as F(G(x)), rather than multiplication. The resulting composite function is expressed as (x - 3)^2 + 2, which simplifies to x^2 - 6x + 11. This distinction is crucial for accurately solving the problem.

PREREQUISITES
  • Understanding of composite functions in mathematics
  • Familiarity with function notation and operations
  • Basic algebraic manipulation skills
  • Knowledge of quadratic functions and their properties
NEXT STEPS
  • Study the concept of function composition in detail
  • Practice solving problems involving composite functions
  • Explore quadratic function transformations and their graphs
  • Learn about the differences between function multiplication and composition
USEFUL FOR

Students studying algebra, mathematics educators, and anyone interested in understanding function composition and quadratic equations.

sfeld
Messages
12
Reaction score
0
F(X) = x^2 + 2; G(X) = x - 3

F times G

Now, I don't know if this problem is different but for the times sign for F times G, its an open circle, its not solid.

Answer is (x - 3)^2 + 2 or x^2 - 6x + 11
 
Physics news on Phys.org
Given [tex]f(x) = x^2 + 2[/tex] and [tex]g(x) = x-3[/tex] Find [tex]fg(x)[/tex] which is not quite the same as f(x)*g(x). You're supposed to find the composite function fg(x). I don't see the problem.
 
FoG(x) is defined as F(G(x)).

Since F(X) = x^2 + 2 and G(X) = x - 3,
F(G(x))= F(x-3)= (x-3)^2+ 2.
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 17 ·
Replies
17
Views
5K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 20 ·
Replies
20
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K