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# Edexcel Core 3 - 21st June 2016 AM watch

1. (Original post by particlestudent)
Please tell me someone used the quadratic formula for one if the trig ones -_-
Yeahh for the one with cot x
2. (Original post by Amy-Jo)
Anyone else think the paper was nice?
Except for Q9 but that's usually the way
3. (Original post by thehollowcrown)
I used this for the cot question
Phew, did u get only two final values?
4. Highest grade boundary for an A, and grade boundary predictions for this year?
5. (Original post by particlestudent)
Please tell me someone used the quadratic formula for one if the trig ones -_-
I did (doesn't mean it's right tho lol)
6. (Original post by d14m)
Marks for 100UMS?

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Anyone would just be guessing.

Focus on whatever exam you have next.
7. (Original post by edothero)
Wasn't it 274.9? Or am I remembering it wrong
yessss i remember getting 33.0 and it was something along those lines
8. Did anyone get tan2x and like 4 angles after using 3cotx?
9. (Original post by hollycooper_1)
any reminders of what you had to do in each question and the answers they got?

remember

3)r cos(x-a)

6 or 7) arcsinx

9)expontential
Q3) R is (2^2+1)^0.5 =5^0.5
a= arctan1/2

7) arcsin(x+1)=pi/3
Sin(pi/3)=x+1
-3^0.5/2=x+1
x=-3^0.5/2-1
10. (Original post by WillRose)
I did fcking partial fractions for that question and got 13 and 20, really messed that up :/
Same aha, snakey question
11. oh my god ((( his mark schemes kept me going man
12. (Original post by AQATrolledMe)
How do you show that the amount of antibiotics left wass 13. something?
add the 1st and 2nd doses, 1st was 15e^(0.2x7) and 2nd was 15e^(0.2x2)
13. Easiest paper in years - why have edexcel dumbed down their maths papers this year?
14. I thought thay exam was awful, not only was it difficult, it also required you to be very fast.
I was working as fast as I could and I still didn't finish q9 b&c.
15. What did everyone get for the value of k (asymptote) on the graph. I got 21
16. (Original post by pauux)
Can i start the clearing process now
17. Any unofficial mark schemes with working out? I remember most questions if anyone needs any
18. Usually I can do a c3 paper within 50 minutes to an hour. But last years paper (which I did at home) and this years paper takes me far longer. It is the first time doing a c3 paper that I felt time pressure
Grade boundaries ought to be low.
19. (Original post by seard007)
Easiest paper in years - why have edexcel dumbed down their maths papers this year?
There's no need to be obtuse.
20. (Original post by mpwb12345)
How did you end up getting that? I didn't have a clue how to do that one haha
R^2= 2^2 + (-1)^2
Alpha= arctan(1/2)

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