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I'm trying to edit a page on Biki, and even after I log in, I can't edit the page Any help would be good Thanks in advance:rotfl:

If you want to understand the concepts, use the Fitzpatrick books, then use Cambridge for different types of questions. I have the Yr 11 and 12 Cambridge texts in pdf form - reply if you want them

Fitzpatrick is pretty good in explaining and summarising the concepts - you should use it to understand the concept, then use the Cambridge textbook for different types of Qs.

what are some good textbooks to use for HSC Physics?

I have both Cambridge and Fitzpatrick - they're both pretty good, but the questions in Cambridge are a lot harder (I find)

I'm doing OK at the moment in maths, not finding it too hard

Thanks!

We havent done permutations and combinations yet, but we've done pretty much everything else (tirg, calculus, polynomials, circle geo etc.)

Would this just be stuff from the extension 1 prelim course? If so, I'll do it.

What are the best textbooks to use for HSC Ext. 1 Maths?:spin:

What's the best way to effectively study for Extension 1 Maths for Year 12?

Does going to a selective high school make it easier or harder for me to get a good ATAR? Subjects for Year 12: * Maths Ext 1 * English (Advanced) * Physics * Chemistry * Economics :spin:

Do I need to remember the solubility rules for HSC Chemistry? :caffeine:

Thanks heaps! So do I just use F = ma for m1 and m2 to find the acceleration for each?

when i said "acceleration" i was referring to the acceleration of the objects in the question

Find the acceleration acting on two objects if their masses are 5 kg and 10 kg respectively and they are separated by a distance of 12.5 m.:jump:

Thanks heaps!

Cos is meant to be cos^2 --> cos6x + sin6x = 1/4 (1 + 3 cos^2 2x)

Thank you!

cos6x + sin6x = 1/4 (1 + 3 cos2 2x) :wavey: Let cos (x) = c and sin (x) = s LHS = c6 + s6 = (c2 + s2)(c2 - c4s4 + s2) = 1 X (c2 - c4s4 + s2) = c2 - c4s4 + s2 sin2x = 1 - cos2x LHS = (c2 - c4[1 - c4] + [1 - c2]) = c2 - c4 + c8 + 1 - c2 = c8 - c4 + 1 RHS = 1/4 (1 + 3 cos2...