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Do as many problems and you can. There is only a limited number of questions they can ask you and if you have done a question similar to the one they give then you would know how to do it. So do as many past papers as you can, if you need more or don't have any then see here...

It is really h/3 where h = (b-a)/n, where n is the number of slices you take.

Dreamerish is right. You fill the burette with the solution of known concentration. I think this is done so you can measure how much of the known solution is needed to change colour.

Please use paragraphs!!

One simple word: TITRATION!! Well that's what our assessment prac is.

Use product rule: y' = 3(x-2)4 + 4(3x-1)(x-2)3 this simplifies to = 5(x-2)3(3x-2) when y' = 0, x = 2 or 2/3

A current carrying conductor experiences a force in an external magnetic field. or The motor effect is the action of a force experienced by a current carying conductor in an external magnetic field. Both are the same thing.

Because the two conductors experience a force away from the rotor and the resultant force is 0 because they both cancel each other out. The momentum and the change in direction of the current keeps it going when it reaches this point. Sorry for the confusion, fixed now.

Correct. Quickest way is to use the product rule.

We have 3 classes of approx 20 out of 150 in the grade. I go to North Sydney Boys.

Use the formula x2=4ay where a is the focal length (distance between vertex and focus) a=2 thus equation is x2=8y

2 ∫ x3-x = -1 2 [x4/4 - x2/2] -1 = 4 - 2 - (1/4 - 1/2) = 4.25

I'm just guessing that works, not 100% sure.

I've been searching for ages but can't seem to find any good information on China's financial market. Does anyone have links or information about China's financial markets? Thanks

Done Complex numbers, now on polynomials.

Rather than time based goals set yourself quantitative goals. eg. Intead of setting aside 1 hour of maths, set yourself an Exercise or a topic. You will get more completed and your time is used effectively.

Great site, thanks!!

LOL I wouldn't blame you. As soon as I'm done I'm forgetting everything.

V=2x2+2x dV/dx = 4x+2 dV/dt= 0.03 we need dx/dt so dx/dt = dV/dt x dx/dV = 0.03 x 1/(4x+2) = 0.03/(4x+2) so when the depth is 0.75m (x=0.75) the rate at which the level is increasing is: dx/dt = 0.03/[4(0.75)+2]= 0.006m/s x 60 = 0.36m/min The deth of the water is increasing...

Also think about a person inside a free falling elevator. The person will experiece 'weightlessness' relative to the elevator. This is because there is no resisting forces. Mathematically: g force = (a + g)/9.8 where a is -9.8 (falling towards Earth) g is gravity of Earth = 9.8 Thus...