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I did 4U maths, but only made it to a middle band 5 ~

Hi, I'm currently stuck with the proof question in the first picture, my working out is shown in the second picture and the book gives a hint(in the 3rd pic) It would be lovely if someone could show me how to continue the proof XD Thanks in advance! ~

Hi , Could someone please suggest what preparation for maths involved in economics and actuarial study should be done during the holiday before first year uni ? Like what maths topics need special attention and what material should I use to prepare for them ? Thanks in advance :) ~

Thank you very much!! ~

Wow ~ thank you! XD ~

Awwww~ ~

Yeah same question as above, could someone please let us know the name? ~

Hi, Could someone please tell me how's the LHS simplified to the RHS? Thanks in advance :) ~

Lol ~

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Hi :) Answer at the back doesn't agree with my solution, could anyone explain why I'm wrong and what's the correct way to solve it? Thanks in advance :) ~

Hi I got a different answer (which quite makes sense) , could someone tell me why I'm wrong? To make it correct, The only way is to subtract 12 in my answer .... But, the function C doesn't consider order, isn't it?! Only the P function counts different orders , so what's happening...

No sense of belonging to your emotion ~

Hi Carrotsticks, do you have 2013 3u hsc solutions? The Dropbox link you posted earlier has expired ~

Sorry for the neck pain and my unthoughtfulness [emoji26] how's this? ~

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What if this mc turns into a four mark question asking how did induction cooktop work? Base on our HSC understanding, should we still state that "heat is generated by eddy current in the cooktop made of high resistance metal?" ~

Could someone please help me with part two this question? my answer has the sigma sign in it, and I don't quite get what the solution provided in the book mean Thanks in advance :) ~

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Let me help you spread your genes ~