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Hey guys, just wondering how do you do collision questions in projectile motion. I need help on Year 12 Cembridge Ex 3G Q 13b). Thanks

When can you drop terms if they are getting in the way of your proof? Induction (summing, divisibility and inequalities)

if n is even prove n^2+2n is divisble by 8 thanks

For the GP (\sqrt5+\sqrt3)+(\sqrt5-\sqrt3)+... verify S_\infty =T_1+\frac{1}{3}\sqrt3

Can anyone show me how to do Question 26b) in the 2011 HSC Chemistry paper? I am very confused :S. Thanks for your help ^^ http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2011exams/pdf_doc/2011-hsc-exam-chemistry.pdf

Qs: Change tan x = sin x/cos x show that if you integrate tan x from 0 to pi/4 the answer would be 1/2 ln(2)

How do i solve this provided within the domain of 0<=x<=2pi tan x =squareroot(2)-1 thanks =D

"The letters KETTLE are arranged randomly in a row. Find the probability of the two letters E are together and two letters T are together". I keep getting 1/30. The answer says 2/15.

Just wondering, are permutations much easier then combinations?

Does anyone know where I can find a full list of HSC questions sorted by topics?

how to solve this? ex 10e q22 In how many ways can a boat of 8 women be arranged if three women can only row on the bow side and two others can only row on the stroke side? ans: 1728

What is the tragic flaw of a protagonist in Shakespearian drama classified as? technique theme etc.

Question 18 of Exercise 4D Year 12 Cambridge Can anyone do it? :jawdrop:

From 9I Year 11 Cambridge - Alternative proof to reflection property. Part d and e stuck. Please help

Just wondering, are you allowed to use 4unit methods in 3unit maths questions?

Does anyone have any advice on how to study all the topics in maths at once?

Just wondering, if you do really well in a low ranking school is it possible to achieve a high atar?

Just wondering to those who are really good at maths, how can i improve problem solving? especially application questions. Your advice would be really helpful

From 8C question 9. The interval PQ has length p and the point A lies between P and Q. Find PA if PA^2=PQ X QA. Thanks =D

I am having trouble with a question in the maximization and minimization questions using calculus. It comes from Question 12 and 13 of year 11 Cambridge Q 12) A window consisting of 6 equal rectangles i) Let entire frame have h height and width y meters. If 12 meters of frame is available show...