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Well, in part (i), you get it in the form 2sin(4t+\frac{\pi }3{}) For part (ii), let it = 0, sin(4t+\frac{\pi }3{})=0. Then 4t+\frac{\pi }{3}= (-1)^{n}.0+\pi n 4t=\pi n - \frac{\pi }{3} t=\frac{\pi n}{4}-\frac{\pi }{12} #

No perms/combs = high70s-low80s/84

This exam wasn't that bad. Just the annoying induction question.

Hey, I'm going to wing my 2U exam but don't want to completely fail so what are the topics/formulae in 2U that you must know that aren't in 3U? All I can think of currently is: - probability - Superannuation (Is this also in 3U? I see this in 3U James Ruse all the time) - Growth and decay...

Bold --> Way too many similes. WAY too much. Some of them don't make sense and just hinder me in forming an image in my mind as there are so much irrelevant comparisons. Underline --> It's alright to have an exaggeration here and there but damn, you have way too many. Whatever is in bold and...

Do schools even do the CSSA/Independent papers at the same time? I swear, people just ask other schools for the questions..

That's what I thought :O Thanks for that :D

Do you think that a person would get lower if they use a related text from a study guide like excel? I'm guessing a lot of people in the state would have been desperate for a text and just used whatever the study guides have so they don't have to do the hard work. Will the markers catch on this...

It was reffering to my first post. And yeah, I didn't see that reply but I agree that the acceleration is not large enough for any real difference to occur. The other main reason is that if Earth were to accelerate, we would too since the planets are essentially in free-fall.

But this isn't about relativity or anything. I'm simply asking if we can feel the acceleration as we approach the sun. Well, I was bothered to figure it out and the reason we can't feel it is because the acceleration increases gradually, so it can't be felt. And it's also because we accelerate...

Ah yeah, sorry - it's approx 100 000km/h not km/s

Hypocrisy and irony at its finest :) Nice to know that people can't extend their knowledge past the scope of the syllabus.

Lol, nvm, you guys fail at applying physics =/ Hope for your sakes that nothing above average gets asked.

Lol, isn't it obvious?.. According to special relativity, speed of light is constant by all observers. So no matter where you are, even on another planet, the unit metre can always be measured. It is also much more accurate. The old one where it was 1/10000000th of the circumference of the...

Ok, what about Earth accelerating when closer to the Sun? Is that also negligible?

Aim for like 60% in exams. Be in the middle of the school. EDIT: Oh wait, lol. Depends on which school. If you're not in the 100s then try and aim to be in top 10% of the school I guess.

We can’t feel ourselves move through space since we are always at a constant velocity (I think around 100 000km/s) so based on our frame of reference, we can consider ourselves stationary. However, according to Kepler’s second law, we move faster when the Earth is closer to the sun due to its...

Probably Harrys. Lol wtf, doesn't harrys site have the prices for each course?

When I'm copying/downloading a file and it says 1 second remaining even though it ends up taking 10 seconds =/

Yeah, that's probably the reason why. I don't really have time to adapt it that much. I just change the thesis/topic sentences and go from there. But that's because I'm writing 1000+ words in 40 minutes which really doesn't leave me much time to think. And I never have the time to sit down and...