# bomaha

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• Gender
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• Exams
May 2013
• Country
Saudi Arabia

7. ## MAY13 Maths HL Series and Differential Equations Paper 3

Yes, Zuler I got everything you said. I got the differential equation in Q2 to be "y= (sinx)(cosx) + 2cosx"?
8. ## MAY13 Maths HL P1 TZ2 Discussion

Ask in the paper 2 Topic. It is now opened. But to answer your question, P(X=1)+P(X=3). For the volume question, i think i got pi^2 + pi.
9. ## THAT experience which was HL Physics Paper 2 TZ2

same mate, thought paper 1 was very horrible (especially when I realized that I have a couple of silly mistakes!), but P2 and P3 were much better
10. ## MAY13 Maths HL P1 TZ2 Discussion

You mean in P2 or P1? If p2, then we can only discuss in 20 minutes If p1, which one? No, i meant question 10 in paper 1, the arctan(1/8) one! pi/2 or something like that ? I remember that I got a perfect value for the arctan in the end :/ arctan1=pi/4
11. ## MAY13 Maths HL P1 TZ2 Discussion

You mean in P2 or P1? If p2, then we can only discuss in 20 minutes If p1, which one? No, i meant question 10 in paper 1, the arctan(1/8) one!
12. ## MAY13 Maths HL P1 TZ2 Discussion

q10 was a good question btw. what did u guys get?
13. ## MAY13 Maths HL P1 TZ2 Discussion

yep, same answer. but for the w+1 question, i drew a rhombus, and since the diagonal of a rhombus bisects the angle, arg(w+1)=pi/7. wait what was the question with the graph and second derivative?
14. ## MAY13 Maths HL P1 TZ2 Discussion

rhombus, thus pi/7! what did you get for the minimum Iz1 + az2I?
15. ## MAY13 Maths HL P1 TZ2 Discussion

I was confused with the sequence question because, I got a quadratic, then I used the quadratic formula but did not simplify!, so did not get 2/3. Got (-9+sqr(441))/18, which is essentially 2/3. So lost a mark there! The exam was fairly easy. Expecting about 110+/-, depending if arithmetic mistakes occurred.