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what i meant by my question is what are the main proofs that we need to have a great understanding of ie which questions of which genre appear most in test scenarios. Just as an example would a question on exponentials require you to know WHY differentiating (e^x) an exponential gives you the...

What are the main proofs we need to know in 3u? Things like the trapezoidal rule, simpsons rule and log proofs dont make sense to me...do i still need to learn them and understand them?

whats better... to do trial papers or hsc past papers (this is for semester exams)?

1)Suppose z is a complex number that lies on the unit circle 0≤arg(z)≤pi/2 Prove 2arg(z+1)=arg(z)

What is better? To talk faster and have more content OR to have less content but use more expression and emphasis on words

Why do you need to monitor phosphate? All i have so far is because it can cause algal blooms which kills marine life. Is there anything else i need to add? what is the quantitative test for phosphate? No clue What is the quantitative test for lead? I think its AAS not sure though

So my understanding is that trading blocs are formal agreements that exclude other countries; do free trade agreements also exclude countries, or is it an agreement between set countries that is open to other countries?

Re: HSC 2016 4U Marathon Realise the fraction and that gives you (cos a)(cos b)-(cos a)(isin b)+(cos b)(isin a)+(sin a)(sin b) note: denominator = 1 as sin^2b+cos^2b=1 =cos(a-b)+isin(a-b) using trigonometric identities (cos expansion and sin expansion)

Re: HSC 2016 3U Marathon equation of pq = y=((p+q)/2)x - apq For this to be a focal chord must pass through o,a sub o,a --> a=-apq therefore pq=-1 (not too sure if this would count as proof that its a focal chord but if i recall the textbook states this is general form) b)d(1/4a.x^2)/dx...

Re: HSC Chemistry Marathon 2016 Here's a question Relate the structure, properties and uses of polyvinyl chloride and polystyrene. (4 marks)

Dotpoint 2.6 says analyse progress in the recent development and use of a named biopolymer What are the recent developments of biopol i was thinking about how they take the strain from cupriavidus metallidurans and put it into E.Coli but they started doing that like 10 years ago, is this still...

Wait can i just say for I)since its in the 4th quadrant angle is just -theta?

Don't really want to subscribe/pay for sites :/

I)prove cosθ-isinθ=cis(-θ) II)Prove sinθ-icosθ=cis(θ-pi/2)

Re: HSC 2015 4U Marathon Please dont tell me this is a typical 4u question...

What are the best website to keep up to date with relevant info (and to put info in your long response to look smart) :D

The complex number z=1+2i is a root of the equation z^2-aiz+b=0 where a and b are real numbers. i) find values of and b ii) Find root of the equation

What would you recommend doing to prepare then? haha

How similar were acer past papers to the actual UMAT? and also what techniques did you learn that you found not very helpful during this years much harder exam?

Has anyone done the caringbah paper, what is its difficulty in relation to other schools?