#### Chapter 2 Equations in one Variable

Section 2.3 Final Test

# 2.3.1 Final Test Module 2

This is a test for submission:
• Unlike open exercises, no hints for formulating mathematical expressions are provided.
• The test can be restarted or interrupted at any time.
• The test can be terminated and submitted using the buttons at the end of the page, or reset.
• The test can be attempted several times. Only the last version will be included in the statistics.

##### Exercise 2.3.1
Find an absolute value term describing the following graph of a function as simply as possible: Graph of the function $f\left(x\right)$.

Answer: $f\left(x\right)=$
.

##### Exercise 2.3.2
Solve the following equations:
1. $|2x-3|=8$ has the solution set .
2. $|x-2|·x=0$ has the solution set
.
Enter sets in the form $\left\{$ a;b;c;$\dots \right\}$. Enter the empty set as $\left\{\right\}$.

##### Exercise 2.3.3
A camera has a resolution of $6$ megapixels, i.e. - for convenience - 6 million pixels and produces images in format $2:3$. Which size has a quadratic pixel on a print-out of format $\left(60$ cm$\right)×\left(40$ cm$\right)$? Specify the side length of a pixel in millimetre.
Find the solution set of the mixed equation $|x-1|·\left(x+1\right)=3$.
Answer: $L$$=$