Announcements
3 years ago
#181
very detailed
http://www.thestudentroom.co.uk/show....php?t=4117823
1
3 years ago
#182
(Original post by FakeDumbledore)
Unlucky mate I've seen the official mark scheme and a few of these are wrong :/
Better luck next year in your resit...
Hi can u post the link for the mark scheme . Thank u.
0
3 years ago
#183
(Original post by Anith20)
Hi can u post the link for the mark scheme . Thank u.
Can we have a look please?
0
3 years ago
#184
What if for the perimeter question, my x value was 15.6 instead of 16.6 as most people got, but my perimeter was still right (120m)? Would I lose any marks?
0
3 years ago
#185
8b) Rules of indices mean that:

2^2X+5 - 7(2^X)

2^5 * (2^2X) - 7 (2^X) = 0

We now have a quadratic in 2^X.

Let 2^X= X

Therefore, 32X^2 - 7X= 0

Factorise: X(32X-7)=0

Therefore, 32X=7

X= 7/32.

As we let X=2^X, 7/32 also equals 2^X

Therefore, X=log base 2 (7/32)

=-2.19
0
3 years ago
#186
How many marks was trapezium part C and logs part B????
0
3 years ago
#187
Guys last year for edexcel c2 it was 59 for an A THAT paper was easier with only 1 confusing question but not tough where this paper i found had a tough log question and lots of places slightly awkward in questions 9 or 10 is it possible, as this paper in my opinion was harder than last year that the grade bound for an A is like 57 due to what i said
0
#188
(Original post by Isabellagoodwinx)
That's weird because I got the c1 mark scheme the day of the exam, I don't mean the actual mark scheme I mean one a teacher has done
Yeh, a TSR member called Arsey was famous for uploading model answers two hours after the maths exams. Today, the teacher informed us that Edexcel don't want the model answers to be uploaded.
0
3 years ago
#189
(Original post by AstarAstarA)
Geometric:
b) 256
c) 1.602

Binomial:
A = 16
k = 7/2
B = 936

Integration:
S = 24.3

Trapezium:
a) 7
b) 20.75
c) R = 5.75

Factor theorem:
a) 5
c) (x + 2)(3x + 2)(2x - 1)

Differentiation(Q10):
a) 1/3PIx^2
d) Minimum = 120m
c) x = 16.63... => f''(x) = 0.437 > 0

Trig identities:
a) Theta = 8/15Pi , -2/15Pi
b) x = 194.5, 345.5

Circle:
a) root(34)
c) 3x + 5x - 95 = 0

Log:
i) (a - 5)/9
ii) -2.19

Likely UMS:

68 - A
57 - B
49 - C
41 - D
36 - E
U
68 for an A!!! man u tripping
0
#190
(Original post by demotivated)
What if for the perimeter question, my x value was 15.6 instead of 16.6 as most people got, but my perimeter was still right (120m)? Would I lose any marks?
I have no idea how you got 120m with the wrong x value.
0
3 years ago
#191
Any ideas for minimum raw mark for 100 UMS on this paper?
0
3 years ago
#192
(Original post by AstarAstarA)
Geometric:
b) 256
c) 1.602

Binomial:
A = 16
k = 7/2
B = 936

Integration:
S = 24.3

Trapezium:
a) 7
b) 20.75
c) R = 5.75

Factor theorem:
a) 5
c) (x + 2)(3x + 2)(2x - 1)

Differentiation(Q10):
a) 1/3PIx^2
d) Minimum = 120m
c) x = 16.63... => f''(x) = 0.437 > 0

Trig identities:
a) Theta = 8/15Pi , -2/15Pi
b) x = 194.5, 345.5

Circle:
a) root(34)
c) 3x + 5x - 95 = 0

Log:
i) (a - 5)/9
ii) -2.19

Likely UMS:

68 - A
57 - B
49 - C
41 - D
36 - E
U
For the log question you had to make a the subject.
0
3 years ago
#193
Did anyone else get k=28 for the binomial question? Because 2kx gave the difference of 56
0
#194
(Original post by dotdani11)
For the log question you had to make a the subject.
Unlucky. Next time read the question. 'b in terms of a'
0
3 years ago
#195
(Original post by AstarAstarA)
Geometric:
b) 256
c) 1.602

Binomial:
A = 16
k = 7/2
B = 936

Integration:
S = 24.3

Trapezium:
a) 7
b) 20.75
c) R = 5.75

Factor theorem:
a) 5
c) (x + 2)(3x + 2)(2x - 1)

Differentiation(Q10):
a) 1/3PIx^2
d) Minimum = 120m
c) x = 16.63... => f''(x) = 0.437 > 0

Trig identities:
a) Theta = 8/15Pi , -2/15Pi
b) x = 194.5, 345.5

Circle:
a) root(34)
c) 3x + 5x - 95 = 0

Log:
i) (a - 5)/9
ii) -2.19

Likely UMS:

68 - A
57 - B
49 - C
41 - D
36 - E
U
Did you not get k=28 for the binomial question, because 2kx gave the difference of 56k
0
#196
(Original post by tripleseven)
Any ideas for minimum raw mark for 100 UMS on this paper?
I'm hoping for 74/75 but this was an easy paper compared to June 2015 (look at TSR polls) and the UMS last year was 75/75
0
3 years ago
#197
(Original post by eftio.gea)
Guys wasn't part a of Q9 = 1/3pi(x^2)????

because the sector area is 1/2r^2(theta)
which is 1/2(x^2)(2/3pi)

= 2/6pi(x^2)
= 1/3pi(x^2)
??
For Q9 it was = pi x2 /3
0
3 years ago
#198
(Original post by LewisClothier)
it asked for b in terms of a. it was: b=a/9-5/9
I got that aswel!!! But apparently its b = (a-5)/9 :/
0
3 years ago
#199
Genuinely think you got binomial b) wrong, and therefore c) from follow on.
0
3 years ago
#200
(Original post by eftio.gea)
Guys wasn't part a of Q9 = 1/3pi(x^2)????

because the sector area is 1/2r^2(theta)
which is 1/2(x^2)(2/3pi)

= 2/6pi(x^2)
= 1/3pi(x^2)
??
Yeah I got that mate
0
X

new posts
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• Imperial College London
Tue, 25 Jun '19
• University of Brighton
Wed, 26 Jun '19
• University of Plymouth
Wed, 26 Jun '19

### Poll

Join the discussion

#### Do you give blood?

Yes - I am a regular donator! (19)
6.11%
Yes - I have once or twice (20)
6.43%
I would like to... (135)
43.41%
No - I cannot give blood (74)
23.79%
No - I don't wish to (63)
20.26%