Pay what the cheat sheet is worth based on your marginal propensity to consume cheat sheets (suggested price: $5) Please use a valid email so I can email you updated copies if mistakes are found. Don't rely solely on my cheat sheet. Consider making your own. Thanks go out to my team who make these cheat sheets as good as they are: Moe, to make sure all the content is there, Imaad, to check it's right, and Ainsley, to make it pretty. Also very special thanks to Ace and Polina for helping out this time around. All proceeds go to me and my co-authors, minus a PayPal processing fee, which cover textbook and lab manual costs. Changelog: v0.1: no colours and probably has lots of mistakes ;-; v0.2: added colours. fixed typo "paradox of thirft". fixed missing graph and paragraph glitch. v0.3: minor math typo in PPP calculation (the answer was right, process wrong lol)