[wanderlust.xx]

Get in. Finally, it's started.

Now, to wait for replies...

Oh screw it, I'm going to post up helpful stuff because it's 8AM and I can't sleep, and it counts as a form of revision.

Helpful way of understanding transformations.

This is going to sound very, very queer, but just bear with me.

Now, does not do as it's told. We often substitute the letter 'x' for 'bad' things, so just remember, is bad. On the other hand, is good, and does as it's told.

So, if you were to ask x to multiply by 3, as in , it would do the opposite, because it sucks, and it would divide by 3 instead. If you asked it to move to the left by 2, as in , it would do the opposite and move right.

So we know that does as it's told. If we tell it to multiply by 2 and add 3, it'll do it, as in .

However, the only time that does as it is told is when you tell it to be naughty. When you put a minus sign in front of it, it just can't resist, and it'll do it, because you're telling it to be bad. So, put a minus sign there, like , and all the x coordinates become negative. Tell to become bad, and it'll do it too. means all of the y coordinates become negative.

Another thing: do things that are closest to the first.

For example, if you had to sketch , do the 2 first, then the 5, then the 3.