Math Problem Statement

f(x)=3/2|x-3|+1

Solution

The given function is:

f(x)=32x3+1f(x) = \frac{3}{2} |x - 3| + 1

This is an absolute value function, which involves piecewise behavior depending on whether x3x - 3 is positive or negative. Let's analyze it in two cases:

1. For x3x \geq 3:

In this case, x3=x3|x - 3| = x - 3. Substituting this into the function:

f(x)=32(x3)+1f(x) = \frac{3}{2} (x - 3) + 1

Simplifying:

f(x)=32x92+1f(x) = \frac{3}{2}x - \frac{9}{2} + 1

f(x)=32x92+22f(x) = \frac{3}{2}x - \frac{9}{2} + \frac{2}{2}

f(x)=32x72f(x) = \frac{3}{2}x - \frac{7}{2}

Thus, for x3x \geq 3, the function is:

f(x)=32x72f(x) = \frac{3}{2}x - \frac{7}{2}

2. For x<3x < 3:

In this case, x3=(x3)=3x|x - 3| = -(x - 3) = 3 - x. Substituting this into the function:

f(x)=32(3x)+1f(x) = \frac{3}{2} (3 - x) + 1

Simplifying:

f(x)=9232x+1f(x) = \frac{9}{2} - \frac{3}{2}x + 1

f(x)=92+2232xf(x) = \frac{9}{2} + \frac{2}{2} - \frac{3}{2}x

f(x)=11232xf(x) = \frac{11}{2} - \frac{3}{2}x

Thus, for x<3x < 3, the function is:

f(x)=11232xf(x) = \frac{11}{2} - \frac{3}{2}x

Final Piecewise Function:

\begin{cases} \frac{3}{2}x - \frac{7}{2} & \text{if } x \geq 3 \\ \frac{11}{2} - \frac{3}{2}x & \text{if } x < 3 \end{cases}$$ Would you like more details, or do you have any questions? ### 5 Related Questions: 1. How do you graph the function $$f(x) = \frac{3}{2}|x - 3| + 1$$? 2. What are the key features of absolute value functions? 3. How do piecewise functions behave at critical points like $$x = 3$$? 4. How does the slope of the lines in the piecewise function change on each interval? 5. What is the range of the function $$f(x) = \frac{3}{2}|x - 3| + 1$$? **Tip:** Absolute value functions typically create "V" shapes on the graph, with the vertex occurring at the point where the expression inside the absolute value equals zero.

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Math Problem Analysis

Mathematical Concepts

Absolute Value Functions
Piecewise Functions
Linear Equations

Formulas

f(x) = 3/2 |x - 3| + 1
For x >= 3: f(x) = 3/2x - 7/2
For x < 3: f(x) = 11/2 - 3/2x

Theorems

Absolute value definition
Piecewise function behavior

Suitable Grade Level

Grades 10-12