Math Problem Statement

Given : f(x)=x²-2x+2 at f (2x-3)

Solution

You are given the function f(x)=x22x+2f(x) = x^2 - 2x + 2, and you're asked to evaluate the function at f(2x3)f(2x - 3).

This means you need to substitute xx in the function f(x)f(x) with 2x32x - 3. So, we replace every occurrence of xx in the formula with 2x32x - 3.

Let's compute it:

f(2x3)=(2x3)22(2x3)+2f(2x - 3) = (2x - 3)^2 - 2(2x - 3) + 2

Now, expand and simplify the expression step by step.

Step 1: Expand (2x3)2(2x - 3)^2

(2x3)2=(2x3)(2x3)=4x212x+9(2x - 3)^2 = (2x - 3)(2x - 3) = 4x^2 - 12x + 9

Step 2: Expand 2(2x3)-2(2x - 3)

2(2x3)=4x+6-2(2x - 3) = -4x + 6

Step 3: Combine everything

f(2x3)=4x212x+94x+6+2f(2x - 3) = 4x^2 - 12x + 9 - 4x + 6 + 2

Step 4: Simplify the expression

f(2x3)=4x216x+17f(2x - 3) = 4x^2 - 16x + 17

Thus, the function evaluated at f(2x3)f(2x - 3) is: f(2x3)=4x216x+17f(2x - 3) = 4x^2 - 16x + 17

Would you like further details on this? Here are some related questions:

  1. How do you evaluate functions at other variable substitutions?
  2. Can we find the roots of the new function f(2x3)f(2x - 3)?
  3. What is the vertex of the quadratic function f(2x3)f(2x - 3)?
  4. How do transformations affect the graph of a function?
  5. How do you compute the derivative of this function?

Tip: When substituting expressions into a function, always carefully replace every instance of the original variable with the new expression.

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Math Problem Analysis

Mathematical Concepts

Function evaluation
Quadratic functions
Substitution

Formulas

Quadratic function formula f(x) = ax^2 + bx + c

Theorems

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Suitable Grade Level

Grades 10-12