Enjoy
http://www.youtube.com/watch?v=F-QA2rkpBSY&feature=player_embedded
Preaching to a physicist. I'm always saying that people should be ashamed that they don't know simple maths. some people are almost proud of the fact. Exponentials and natural logarithms are incredibly powerful things. The things you can do with those are more than can be covered in a simple forum post. Most maths I know I only know vaguely. I look it up when I need to use it. There's no shame in looking up something. It's having even the slightest idea how to tackle a problem that's the key.
Knowing which tool to look into is the key. I've taught myself the basics of countless skills based on the slightest clue about what's useful. Maths is that same. Useful once you know what you're looking for.
Awesome video!
I really wish I had lectures like this at A level and Uni.
Once I began programming in my teens I leant all about exponentials pretty quickly by writing shady code. Wasn't until at UNI when "run time complexity" functions were taught to me that I could express problems like this as an equation easily.
Using 70 is an awesome short cut and I will remember that for ever now =).
It need to be easier to find awesome stuff like this on the internet so everyone can benefit from this knowledge. Too much crap on the net these days!
DZ
Lots more similar stuff at academic earth (http://academicearth.org/)
Woah my horizons have been broadened really interesting video there, Ive probably learned more from that video than the last 6 months of maths at school :)