Edexcel C3,C4 June 2013 Thread

Here you go:

It's in the 'integration using trigonometry' bit in the textbook. There was a whole chunk of questions using it too

Posted from TSR Mobile

it can only get better, I promise!

Remember that because you're integrating it parametrically, you want to integrate between the $\theta$ values. So find the values of $\theta$ when y=0. Integrating between these two values will only give you the top half of the ellipse, so you then need to double it. You could also integrate between $0$ and $2\pi$ if you wanted to do it all in one go.

Hmm maybe i'll take a gap year?

I appreciate that people worked hard and that stress got to many people a bit (people were tearing up in the exam hall), and I myself froze at the beginning of question 3 for a bit. However apart from the speed and distance and stuff like that which threw everyone off everything was on the syllabus Afterwards people moaned how they couldnt get ff(0) because they didnt give the equation of f(x), but if you're a proper a level maths student you would see that it was a simple linear line (which they said at the top).
Everything was on syllabus, but it was a proper test. I'm not great at maths, but a little bit of common sense helped me through most of those questions

I think a* boundaries don't get changed (which is ridiculous)


Posted from TSR Mobile

Thanks, such a silly error, need to focus more on the question

T___T .. Well isn't that my only A* out the window.
I'll probably get a B if I get lucky now.
*Sigh*

Could someone please help me with question 4b and 5b please? I don't know how to solve this kind of question. Thanks in advance


Posted from TSR Mobile

what papers/questions are everyone doing, done all edexcel, solomon/zigzag worth it???

Hey you did part a right of question 4 why is the answer in the book divided by 2 not kept as 4.....


Posted from TSR Mobile

does anyone have a list of formulas we need to memorise?

Hey guys I have a question, for vectors in c4 they sometimes ask us to work out te area of a triangle, would I get full marks if I used the cross product from fp3?

Well I'm sure you might because in the mark schemes sometimes they show alternative methods of getting answers etc. So yeah I guess so man

You forgot to square root the 4