Exam (elaborations)
#O C R A Level Mathematics B (MEI) H640/03 Pure Mathematics and Comprehension June 2023
#O C R A Level Mathematics B (MEI) H640/03 Pure Mathematics and Comprehension June 2023
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#O C RA Level Mathematics B (MEI)
H640/03 Pure Mathematics and Comprehension
June 2023
Time allowed: 2 hours
You must have:
the Printed Answer Booklet
QP
the Insert
a scientific or graphical calculator
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided in the Printed Answer
Booklet. If you need extra space use the lined pages at the end of the Printed
Answer Booklet. The question numbers must be clearly shown.
• Fill in the boxes on the front of the Printed Answer Booklet.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
• Give your final answers to a degree of accuracy that is appropriate to the context.
• Do not send this Question Paper for marking. Keep it in the centre or recycle it.
INFORMATION
• The total mark for this paper is 75.
• The marks for each question are shown in brackets [ ].
• This document has 12 pages.
ADVICE
• Read each question carefully before you start your answer.
2023 Turn over
, 2
Formulae A Level Mathematics B (MEI) (H640)
Arithmetic series
S = 1 n^a + lh = 1 n"2a +^n - 1hd,
n 2 2
Geometric series
Sn = a^1 -
rnh
1- r
a
S3 =1 - r for r 1 1
Binomial series
^a + bhn = an + nC1 a n-1b + nC2 a n-2b2 +f+ nCr a n-rbr +f+
bn ^n e Nh,
nJ N
n!
nC = C =
K O=
where r n r r r!^n - rh!
L P
n^ n - 1h 2 n^n - 1hf^n - r +
^1hx+r +f
1 ^ x 1 1, n e Rh
n
xh = 1 + nx + x +f+
2! r!
Differentiation
f^xh f l^xh
tan kx k sec2kx
sec x sec x tan x
cot x -cosec2x
cosec x -cosec x cot x
u dy
du dv
v - u
Quotient Rule y = , = dx dx
v dx
v2
Differentiation from first principles
f^x + hh - f^xh
f l^xh =hlim
0 h
Integration
c f l^xh
d dx = ln f^xh + c
e f ^ x h
n 1 n +1
; f l^xhaf^xhk dx = af^xhk +c
n+
2023 1 H640/03 Jun23
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