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If you have the digital version of the textbook, you can access the book online, and there are answers at the end of every chapter revision.

sin(a + b) = sin(a)cos(b) + cos(b)sin(a) Similarly: sin(A + B - C)cos(A - B + C) + cos(A + B - C)sin(A - B + C) = sin[(A + B - C)+(A - B + C)] = sin(2A) Here's the answer, little late sorry

It could also be that they y=x is the mirror, and y=x^1/3 is the inverse of y=x^3. But idk about that. The questions seems a bit too vague.

There are plenty of Half Yearly Papers on: https://thsconline.github.io/s/yr12/Maths/assessment-tasks_advanced.html#files:hy They have most of the content that would be in your exam...

Can someone simply explain to me how DC and AC generators work? I already know how the coil rotates, and the concept behind EMF and back EMF, and the factors that change the strength of the generators Specifically, I'm a little confused on the split and slip rings, concerning their changing...

You did it correctly but in the end, when you were doing the integral for (cosx - sinx), you forgot to attach -(sin0 + cos0) in your third step. That gives you -1, which in the end would give you the correct answer

Just another friend passing by!

No problem! Study Hard! :haha:

Not too sure about this, but I think this has got to do with the back EMF, generated when a current is induced in the wire. When the motor first turns on, the current will be that of the one supplied by the voltage of the external circuit... But as it starts spinning it experiences a change in...