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I'd like to know about the marks that you receive for your individual subjects after you complete the HSC: - Is there any way to find out your raw marks for each subject? - Regarding the english papers, is there any way that you can find out the marks that you've scored for the...

A typical example of this would be to prove that int(f(a-x)dx) =int(f(x)dx) when using the substitution u = a-x and progressing to int(f(a-u)du), why is u interchangable with x? the main dispute I have is that it appears to conflict with the relationship u = a-x, which suggests that u...

Thoughts?

I see it used all the time... "Mathew's the best" "Bob's lifting the weights" Is this a correct use of apostrophes? I'm pretty sure that for people, apostrophes are used as possessives only

What company did your school buy their physics trials from? (just wondering what is the most popular company) or did they make them themselves?

Just say if I have a line with collinear points PMQ. If I were to calculate the gradient of the end points P and Q, is it viable to use the gradient of PM (or QM) instead? (if so, do I need to state it in my proof)

Explain why the energy needed to place a satellite in orbit is greater than the work required to lift the satellite to the correct height of this orbit. In other terms,why does it take more energy to put a satellite into orbit at x km altitude than it does just to lift it up to x km?