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# October/November 2017 IAL C34 Mathematics thread watch

1. Since its the first year C34 was introduced in october i doubt alot of people did it. But overall how was the paper?
2. it was all easy except the last 2 questions
how did you find it?
3. (Original post by chi3015)
it was all easy except the last 2 questions
how did you find it?
Calculating for u in the end of last question gave me some weird number... although area of triangle worked out really nicely.
4. (Original post by chi3015)
it was all easy except the last 2 questions
how did you find it?
Overall it didnt go too bad. I answered all the questions except one 2 marker but time was an issue as i didnt have time to do an overall check of answers. Hopefully careless mistakes are minimal.
5. Everything went smooth except the very last vector question where you were supposed to find the possible positions of C. How'd you guys manage that?
6. (Original post by Fasih178)
Everything went smooth except the very last vector question where you were supposed to find the possible positions of C. How'd you guys manage that?
i probably did that wrong i didnt know how to do that
7. had you guys done c34 before this or is it the first time
8. (Original post by Fasih178)
Everything went smooth except the very last vector question where you were supposed to find the possible positions of C. How'd you guys manage that?
Urm, i think I made a quadratic equation to find U or whatever the scalar parameter was and once i found U i subbed in to find possible C coordinates. Got some decimals/fractions so not too sure myself but i think the method is correct
9. (Original post by Maserati11)
Calculating for u in the end of last question gave me some weird number... although area of triangle worked out really nicely.
what did you get for the area?
10. in the last part of the question 11 what did you guys get for t and dh/dt
11. Btw guys, in that question where they ask an answer in the form 'a+ln(b)' did the intergration leave you with just an LN function?
12. what do you guys reckon the A* boundary would be like
13. (Original post by Maserati11)
Calculating for u in the end of last question gave me some weird number... although area of triangle worked out really nicely.
Hahaha omg same for me! Clean area answer some wacky last question number
Btw guys, in that question where they ask an answer in the form 'a+ln(b)' did the intergration leave you with just an LN function?
at first it did but when i rechecked the first step where you split it into partial fractions you ought to divide first as it is an improper fraction
15. (Original post by chi3015)
in the last part of the question 11 what did you guys get for t and dh/dt
I'm not all that sure but it was a pretty long sum for that dh/dt question. I can't remember the time clearly tho soz
I'm not all that sure but it was a pretty long sum for that dh/dt question. I can't remember the time clearly tho soz
okay cool

do you think you would get an A*
17. (Original post by chi3015)
okay cool

do you think you would get an A*
You can never be sure tbh. Do you think the boundary will be high? The highest I've seen it go is 115. The easier the paper the higher the boundaries But i dont think this is the easiest paper. What ya reckon? I think 108-110 maybe?
18. (Original post by chi3015)
what did you get for the area?
It was 1/2 x 12 × 24 × sina
19. (Original post by chi3015)
i probably did that wrong i didnt know how to do that
You weren't able to obtain an answer?
20. There was a problem which we had to find in form of a+ln n..
Calculations were pretty dirty and it was like - 3ln3+7ln2.. so ln 2^7 / 27 or sth..

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