## Chapter17Example-Like Elements

PreTeXt provides three closely-related tags for things that are examples or similar. They are <example>, <problem>, and <question>. They all have the same syntax. The <title> element is optional. You may either use a freeform example, as shown in Listing 17.0.1, or an example structured with a <statement> and zero or more <hint>s, <answer>s, and <solution>s (in that order). This is illustrated in Listing 17.0.3. Note that for HTML output, if your <example> has a <solution>, the solution will be hidden in a knowl, and the publisher does not (as of August 2019) have the option of not knowling the solution.

The code in Listing 17.0.1 produces the following output:

The derivative of the function $$f(x) = 3x^5-7x+5$$ is $$f'(x) = 15x^4-7\text{.}$$

The code in Listing 17.0.3 produces the following output:

Differentiate the function $$f(x) = 3x^5-7x+5\text{.}$$

$$f'(x) = 15x^4-7$$
We use the power, sum, and constant multiple rules and find that the derivative is $$f'(x) = 15x^4-7\text{.}$$