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My confidence plummeted after my MX1 exam today. :/

Your links aren't work :S But, a. We can see that OM is a perpendicular bisector of QR (radius to midpoint of chord is perpendicular) From here, angle QOM = theta... b. Area of PQR = 1/2 QR (PM) [1/2 b.h]... c. Differentiate the above equation with respect to theta...

Yes, you have found the vertex - but what does the question ask you for?

How do you find the vertex of that parabola? Then, once knowing the value of a, how do you find the focus?

I think 19 is questioning the nature of bond formations between C and O itself during combustion. O is rather electronegative compared to any other species in the closed system of combustion (CxHy + O2) and so when C-C / C-H bonds are broken during combustion, the C's pair up with O's to form...

Yes and it kills mood/confidence haha (if you've realised mistakes) :(

EVERYTIME I walk out of an exam I realise a futile mistake </3

Most number of band 6's is how we do it.

People sell their english essays and creative writings, however what about the other text types such as feature articles, speeches, and interviews? Why are they neglected? I've been lead to believe that the Board of Studies can demand them in the HSC exams. Insight please :)

Should you utilise quotes in an essay that have no techniques but instead strong textual evidence that support your view/thesis? I heard this was a no no

1 day later still not sure if serious LOL

Mhm :) Andrew Wiles went into solitude for 6 years to work on the conjecture before releasing a proof that had an error in it, requiring an additional year to correct. (or something like that)

^ Very clean :) My way was a lot slower. :(

Your third answer is wrong; cineti got it right (btw your method is very tedious and inefficient) And i got 6720 for my fourth answer; there seems to be varying answers so I won't post my solution Edit: Q1 & Q2 are fine (forgot to mention) Edit 2: Nvm Q2 is wrong - but braintic's solution to...

Anyone know what happens if I don't go to one of my yearly exams?

Not sure if serious (sorry) but diagonals in rectangle are equal and bisect each other.

Speaking of disappearance, WHERE DID DEMENTO1 GO?! That mathematician! I want to be better than him.

Hahaha. 7 years later...

Consider the cases where 1,2,3...10 symbols are used: 2 + 2^2 + 2^3 + ... + 2^10 = 2046

What is modulus 7 lol. Seems interesting