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I'm wondering where other schools are up to. Our class has finished the course.

Done all but graphs and harder 3u.

Okay, first of all, you know the locus of v is (x-3)^2 + (y-2)^2 = 5, so any point v has to satisfy those conditions. (not really necessary, but nice to get an idea of what's going on) 67 degrees? Really? That's slightly troll, so i'll use 67.5 so that i can get an exact value. You can just sub...

I think that while English SHOULD be compulsory, it shouldn't be the only thing that's compulsory. I think a good system would be one where both English AND Maths were compulsory. In essence, these two subjects stand at the core of many other subjects. Sciences are strongly based on a blend of...

If you got 83% raw in the external exam, I would estimate that to go up to 95 or 96 for your exam mark. Depends on the school of course, though.

Mechanics can just get fucked, the harder questions are madness. The concept is nice, but doing the maths is just wow. I'm hoping that with more practise the topic will become more doable...

brb bringing 50 calcs into eco exam to store stats

Indeed, the 3u test wasn't that hard. 4U.... haha, 75% would probably be ranked like 15th or something like that. (out of 100) Most of the questions can be done, but it's more a matter of whether you have time to do them.

My diagram is bad, you are correct. But it illustrates the point all the same, if the players are aiming to minimise their losses, they will not bid above 20, since from that point onwards, the more they bid, the more they lose.

The game was that if you lost, you lost the amount you bet and got nothing back, if you won, you lose the amount you bet but gain 10.

Hopefully the image illustrates. The red line is your loss if you bid and lose, the black line is your loss if you bid and win. You can see that, when you bid 20 and win, your loss is equal to the loss of bidding 20 and losing, so if you bid above that point, then you make a greater loss than...

Hmmmm, the problem with that is I think that there will still be a gain of +10 for the winner. Bidding at $5.50 would still yield a net gain of 4.50 for the winning bidder, and the one who is losing knows that by making another bid, they will be able to make a net gain. Since they were unable to...

Opportunity cost of not doing questions is outweighed by the chance of getting them right ;)

Last three questions are game theory, I'm confident I got 39 but not entirely sure about 38 and 40.

Good life. I know for a fact that I got some of the harder questions right, which I'm pretty happy about, but some things were just ridiculous. Economic profits?!

^shut up, it was one mark.

Yeah, the major constraint with 4u was time. I think people would have done much better if there was another half hour or so, but you have to live with what you get I guess.

4u and 3u Baulko half yearlies. Average for 3u was 67, 4u was 61. imo 3u wasn't really that difficult, but some people died pretty badly in that test. ALSO JUST COS I CIRCLED 1A DOESN'T MEAN I'M SHIT, I HAD A MENTAL BLANK :D ALSO, question 6a of 3u is worth FOUR marks. ALSO, if you can't...

mirin those scores mate ;) How hard were the tests?

Can upload but I have written a bit on them, and they'd have to be scanned/photos. If you don't have any problems with that I might get round to it tmrw afternoon.