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wow didnt realize you had to be so specific, thanks for the input

Never gonna let you down... Never gonna run around...

by letting b be the subject of 5b + 3a = 9 ---1 you sub it into 10b^2 + 15ab + 3a^2 = 12 then you get a farely messy quadratic the final simplified version is 4b^2 - 9b - 9 therefore b = 3 or -0.75 subbing into 1: you get a = -2 or 4.25

our teacher calls the derivation of the one without paramaters the sleight of hand trick

i cant be bothered writing the whole expansion out but you pretty much expand both binomials and see what multiplies together to give you x^6 and x^7 This is what i got(although my workings a bit messy so i might have missed something): for x^7 coefficients are: 3C0 x 5C1 b + 3C1 x 5C0a = 5b...

How else is he gonna build up street cred? Also @ninetypercent: I've seen you on the ext1 forums, have you learnt the entire yr12 3U course even before Yr12 has started?

1.since the questions specifies its 5m away from its centre of motion you can ignore b 2.usually you work out whether to take the positive/negative root when the questions gives you a result e.g. the question states when x = 3 v = -5 you would put this into your equation and see whether the...

I was merely pointing out that if they fail their HSC their hopes and dreams arent all shattered. Also technically speaking time indeed does slow down significantly if we are travelling at relativistic speeds. :P

Period = 6 therefore 2pi/n = 6 therefore n = pi/3 a = 8 using the general form v^2 = n^2(a^2 - x^2) v^2 = (pi/3)^2(8^2 - 5^2) = 42.768.. therefore v = +/- 6.5397... cm/s not sure why answer is negative though... a = -n^2x = - (pi/3)^2 x 5 = - 5.4831 cm/s

There are various alternate entry schemes into university. Alternativley, if you dont get into the course you want to, you can always get into a lower related course and work your way up from there. The HSC is not some absolute test that decides your destiny. Where there' s a will there's always...

That advice is pretty much correct but I think you also need to know the basics of interference and diffraction and how this is a wave property and also you definitely need to know about electric fields and magnetic fields but you do go over this again so I wouldnt worry too much

Since our school never finished this topic I had to teach myself the standard model and so I was wandering if my response to this dotpoint was correct. Q: Discuss the key features and the components of the standard model of matter, including quarks and leptons A: The standard model is a theory...

The main topic that has electricity is motors and generators but is a very different use of electricity than a simple circuit. Also there is almost no work on waves besides wave-particle duality which is actually pretty cool(is light a wave or a particle?) I think one of the major things that...

Can't speak for bio but having done the year 12 physics course stick with it. It gets so much more interesting than speed = distance/time especially relativity, which is pretty god damn interesting. + it scales decently and is a pretty easy subject

at the end of the day, do what you like doing, it will help keep you sane. If you hate maths with a passion why do 3 unit ? You will be less motivated to study for it.

okay thanks alot for clearing that up for me

but why are there 3! x 5! repetitions? and also why is my method incorrect?

Eight people attend a meeting. They are provided with 2 circular tables, one seating 3 people, the other seating 5. i) How many arrangements are possible? ii) If the seating is done randomly, what is the probability that a particular couple are on a different table? for (i) i did this...

The most difficult SHM questions ive seen are the tide ones, where the questions gives you the time for high tide and low tide and a ship can only make it out of the harbour at a certain heigh and you have to formulate your own equation and work out the time period for the ship to be able to...

yeh sorry fixed now didnt realize "< /" makes the text after it disappear (damn forum code) +1