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Wait I think I'm gonna get around 85 as my raw mark for the HSC, but I got like around 65 for internals, with my rank being 12th in the cohort. Will this be enough to pull a E4???

yes please could someone share the paper if they have it???

This is the full solution

The extra 2 comes for 2\cos\frac{k\alpha}{2}

Yep I see it now sorry that was a bit incorrect, i just fixed it up

i cant even see what i typed, its just coming as a small square

LHS=(1+\cos\alpha+i\sin\alpha)^k+(1+\cos\alpha-i\sin\alpha)^k \\ =\left(2\cos^2\frac{\alpha}{2}+2i\sin\frac{\alpha}{2}\cos\frac{\alpha}{2})^k+(2\cos^2\frac{\alpha}{2}-2i\sin\frac{\alpha}{2}\cos\frac{\alpha}{2}\right)^k \\...

Use Double angle formulas to get rid of the 1 in the LHS and then start from there

What 4U exam???

Surely that question is not in the syllabus

Hi, I was wondering if anyone has the excel biology book either as a pdf or a hard copy. If so, can someone send me just the questions for module 5 and 6. I dont really need the theory, but just looking for the questions. This would be greatly appreciated. Thanks! :)

oooo thank you so much!!!

Hi, I was wondering if anyone has a broad essay question for the common module, that I can write my master essay on. My prescribed text is Billy Elliot. Thanks!

You can also do it algebraically by considering z=\cos(2\theta)+i\sin(2\theta)

yh I ended up using them instead

Does anyone have access to his solutions? Apparently the solutions in the dropbox were deleted. If anyone has carrotsticks solutions, please let me know. Thanks

Hi, I was wondering if anyone is able to give me feedback on my essay. Its on Henry Lawson's short stories Any help would be greatly appreciated :)

I was confirming if that's the correct way to do it?

Hi, could someone help me with this question? My approach was to do: -\frac{GMm}{2r_f}-(-\frac{GMm}{r_i}) since initially, it had no kinetic energy (it was at rest) and later was placed into an orbit.

Alright then it's settled that the question is probably flawed!