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https://skydrive.live.com/?cid=34caf24f73803652&id=34CAF24F73803652%21153&authkey=!AHRJRolSQWmYCAQ Might find some half yearlies in there. Courtesy of nerdasdasd

Mid - high band 5.

Oh God. MC: 7-8/10 11: 12/15 12: 15/15 13: 13-15/15 14: 6/15 15: 3/15 16: 5/15 61 - 64 / 100 F. M. L.

Probably not..they're two different courses. But, they might compare the mark of 2U students doing 3U to find more accurate cut offs? Lol, idek.

Okay, but the question didn't say that force was being applied on the particle? I'm looking it a different way. And v < 0, so the particle is moving toward the origin. Screw this. Another mark lost. Another band down the drain.

Yeah 16 years and 1 month is what I got as well.

frkn argh. made a silly for part g. said radius is 4, instead of 2. ;(

Is this in the 2U course?...

Not everyone does...

But it's a horizontal point of inflexion, so f'(x) = 0 Screwed up that question as well :/

I used a black felt tip pen for all the diagrams :L

Right.

Yeah, that's right.

I've seen this type of question in a 2U trial before. Yet I still managed to screw it up.

If a > 0, the particle is travelling at an increasing speed. If v < 0, the particle is travelling towards the left (or towards the origin). For questions like: for what values of x is f(x) is increasing, isn't it when f'(x) > 0 ? look at v as f(x) and a as f'(x) Since a [f'(x)] is > 0, v...

Yes you did. All you had to do was find the second derivative. Since it was just a number, you didn't even have to sub t into it to prove it's a minimum.

No. Your raw mark of 70 will get aligned to a band 5.

lol i was kidding thanks (:

How do we know this isn't spam..?

1. D 2. B 3. B 4. A 5. C 6. B 7. B 8. C -- what is wrong with me 9. C 10. B