1. **Stating the problem:** Convert the given mathematical explanation or problem into a PDF format. 2. **Understanding the request:** Converting to PDF is a file format operation, not a math problem. 3. **Math assistant limitation:** I can provide math solutions and explanations but cannot perform file conversions. 4. **Suggestion:** Use a text editor or online tool to copy the content and save or export it as a PDF. This completes the response to the first question.