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You should expect some 3 unit questions require some methods or formulas from 2 unit as a part of the solution, which the steps that is before or after the 2 unit method are beyond 2 unit course. An example of this is that the equation sin^2(x) + cos^2(x) = 1 is also commonly used in the...

Drop it then, ext-2 technically don't offer an advantage in my opinion due to its massive time consumption, it would be painful for you to catch up while having an enormous work. I don't really think 10 unit is risky because no matter how many units you have, the exam should reflect your...

are you struggling in ext-2? Are you interested in ext-2? Are you struggling in other subjects due to ext-2? What is your position in class for ext-2? Provide more information about your situation I guess

from what you write here, it seemed that the subject you are considering dropping is eng ext 2 and french ext 1, but you are interested in both of them and they both have a heavy workload. Even though you haven't been tested in both of them, but you clearly think you are better at English than...

Thank you

How to solve the following question, I did find the method of solving using linear independence, is there any other method to solve this question with vectors? Suppose that OABC is a parallelogram. Let M be the midpoint of OA and let P be the point of intersection of MC and OB. Prove, using...

Thank you

How to do c) in the following question?

even in a 100s school, you probably need to be the 1st in your entire year, because schools like this does not always have 99 atar every year

The thought process for this one, is first to draw a diagram of course. The question requires length, so to convert a vector to length, one effective way is the dot product, which the dot product of itself is equal to the distance squared, e.g. x • x = |x|^2. So in the R.T.P. I do that to make...

Hope this helps, if you have any part which you don't understand, you can always ask. It's an interesting question, because I didn't believe this statement to be true when I first saw your post. I rushed this so some of the vectors do not have the dash.

Go to raw mark database, in hsc, the raw mark will adjust into hsc marks (which is usually a lot higher) for the calculation of atar in the atar calculator, it will no longer be 97.2 once you consider the adjustment. For physics, since you are still third, you really should check how many band...

Mif is probably thoroughly enough if you understand the topic, but it's not when you have not learned the topic and read it to preview before class. I tried to read both the Cambridge and the MiF before I learn complex number, the Cambridge textbook allows me to have a basic idea and MiF made me...

You also have to look at your school as well, a B in selective is not equal to a B in comprehensive public high school. Search up the honour roll for your school and check how many band 6 are there for your subject and determine your likelihood of getting it when you compare the numbers with...

fair point for adv maths or even ext 1, but ext 2 students are supposed to be a top performant student even in lower-performing schools, so I think ext 2 MiF is literally useless when it compares to Cambridge. But I do think this contributes to the reason why MiF is used

poor explanation for preview, lack of hard questions as well

So can you get the answers if you have the interactive textbook? How to do that?

Firstly, you can consider which one is more difficult for you, for this you can look at your result for this like what vishnay said and look how much time the two subjects consume you, if that cannot differentiate, then consider which one is more interesting for you, if you like or hate them...

I also don't quite understand your question, but if you are solving for x. Firstly consider α = 2x, then times the domain by 2, i.e. [0, 4π] or 0 ≤ α ≤ 4π, then solve for cos α = 1 in this domain, the answer is: α = 0, 2π, 4π. i.e. 2x = 0, 2π, 4π ⇒ x = 0, π, 2π. You can also solve this...

I think you already understood from what username_2 and Eagle Mum said, just to make it more clear, so in ionic compound (salt), the metal atoms lose their electrons and become cations, while the non-metals gain these electrons and become anions. The atoms in ionic compounds are held together by...