You are Here: Home >< Maths

# Edexcel C3 June 2016 - Unofficial Mark Scheme

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
1. How many marks was 5i) worth?
I can't remember whether I did tan(4/3) or tan (3/4) by accident, would I lose 1 mark if I did the second one but the rest was right?
2. (Original post by UJustGotLittUp)
I can't believe how **** I did in this 😭😭😭 there goes my A* and my chances of getting into uni
Omg I'll be lucky to get an A overall now :'( I'm so fkin upset
3. (Original post by veldt127)
I'm not 100% sure on all of these, but I think most are correct.

Question 1
Spoiler:
Show
A. -5, 6
B. 6
Question 2
Spoiler:
Show
A. (20-4x^2)/(x^2+5)^2
B. >sqrt(5), <-sqrt(5)
Question 3
Spoiler:
Show
A. R= sqrt(5)
a= 26.57°
B. 33.0°, 273.9°
C. 86.1°
Question 4
Spoiler:
Show
Ai. 21
ii. ln(2.5)
iii. 25
B. Show that question
C. 1.4368, 1.4373
D. Show the root was in [1.4365, 1.4375]
Question 5
Spoiler:
Show
i. 0.9463
ii. 0.5cosec(4Y)
Question 6
Spoiler:
Show
A. A=3, B=4
B. Normal eqn. -0.5x + 17.5
Question 7
Spoiler:
Show
A. graph of arcsin, sort of a rotated S shape. Went through (0,0), (-1,-pi/2), (1,pi/2)
B. -1-0.5sqrt(3)
Question 8
Spoiler:
Show
A. Trig proof
B. -2.848, -1.277, 0.294, 1.865
Question 9
Spoiler:
Show
A. 6.740 - dose after 4 hours
B. show that dose equalled a value after 7 hours
C. 5ln(2 + 2e^-1)
A = 5, B = 2
PDF with working for 1-4 and 9 : http://www.thestudentroom.co.uk/atta...5&d=1466508775

Im pretty sure the p in 5ii was 1?
Does anyone remember the question?
4. (Original post by Dieselblue)
Hmm I think i did something stupid in the exam saying that -4x^2+20 = -4(x^2+5) which is wrong. Would I get the final mark for writing the -4x^2+20/(x^2+5)^2 ? Because I definitely wrote that.
on the top of mine i simplfied it further and had 4(x^2-5) cant remember if the 4 was positive or minus and the plus or negative was inside the bracket but you couldn't cancel it further, only simplify the top bit.
5. how many marks were 2b and 3c?

for 2b would you get a mark for saying +-rt5<x taking into account all of the working out before
6. What Are the marks for each question, anyone can remember?
7. (Original post by sandybeach1996)
am the person who missed out all of question 8 so I KNOW how many marks
how do you get over it..coz i skipped all of it as well
8. (Original post by sandybeach1996)
am the person who missed out all of question 8 so I KNOW how many marks
do you know how many marks it was?
9. how much marks was Question 3B. I stupidly added 26.57 to my two values instead of taking it away. do you think ill get method marks?also, for the answer 0.5cosec4y, I got 2Cosec4y, would I get method marks for this too?
10. (Original post by fishs003)
do you know how many marks it was?
no i did swell no joke how do you get over it
11. Guys I got the inequality wrong for square root 5 and did not simplify 1/2ln(25/4) how many marks do you think I'd lose???
12. How many marks was question 2?
13. For question 2, I got x > +/- root(5).

How do you get the final answers from this?
14. (Original post by eyeman567)
Just don't know where my head was at today...
No need to worry too much, you are just missing the accuracy mark(s), maybe 1 or 2. And the marks for each question is quite low, even you messed up 1 to 3, I would say it is still possible to get 90 UMS or higher
15. (Original post by Don Pedro K.)
For question 2, I got x > +/- root(5).

How do you get the final answers from this?
same aha luck
16. (Original post by ebolaboy)
how many marks were 2b and 3c?

for 2b would you get a mark for saying +-rt5<x taking into account all of the working out before
3c was 2 marks
17. (Original post by Engineerrookie)
Guys I got the inequality wrong for square root 5 and did not simplify 1/2ln(25/4) how many marks do you think I'd lose???
Did we have to simplify 1/2ln(25/4) ?
18. Can anyone give us the marks for each question?
19. (Original post by TSRPAV)
for 5a) i got 0.061 something which was out the boundary they asked but was a turning point,how many marks would i lose?
if your answer is a correct solution should only be 1 mark for missing range
20. (Original post by Irmakozturk)
Im pretty sure the p in 5ii was 1?
Does anyone remember the question?
Nope it was 1/2.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: September 7, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources