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And also, when deriving equation of chords for ellipses and hyperbolas, do we need to show how we derived the (sums and products formula) for finding the gradient? BOS doesnt expect us to know any formula, but we have to learn that for 3 unit anyway.... 2) questions like where we have to find...

So for any integration questions, we can use any method unless stated...and we get marks right?? and when we get a form like this 1/a^2 - x^2 .dx, do we have to solve it using partial fractions or just use In (a+x/a-x) +C in exam? Thanks

Find abcd and prove they are not integers :D

For integration questions like x/(1+x^2)^1/2 .dx Are we allowed to solve it without using u substitiuion in HSC?

2) :)

1) sub r=h/2 in the volume formula for cone, differentitate and then you know what to do ... 2) find dr/dt by using the rate of suface area and then use that to find volume rate

I agree with carrots :)

People study 16 hours a day :O NO JKS :P

Why can't we just use one method for both?? I am not saying these two methods are hard, but like WTF :D

Why the hell do we have to solve 'projectile motion' questions using a different method in maths and a different method in Physics?! So annoying !

Study 24/7 lol

Stop it guys, stop asking him for past papers LOL!!

I was just going to post "dw guys, I got it" lol Thanks anyway Carrot :)

What is d/dx (x/(x-3)^1/2 Do we take (x-3)^1/2 to the top and use product rule??

thanks guys :)