# Solutions to Lab 4 exercises & Reflection¶

## Written solutions¶

The written solutions for this week can be download as PDF below.

## Video explanations of some solutions¶

Videos for some questions from the green section are shown in the hints page.

Please let me know if you want clarification on any other exercises.

## Reflection¶

Proof...

- How many methods of "proof" can you find?
- What are your favourite ones?
- Which ones you know (almost) nothing about?
- Which ones do you expect will be used in this module?

You can use Wikipedia as a starting point.

Read the "Mathematical proof" article in Wikipedia

Info

You don't have to hand-in your reflection -- this is not an assessment. Keep your notes and go over them as you understand the material more. Some of the above ideas will become clear in one week, while others will be met again towards the end of the module!