ational 4XDOLÛFDWLRQV 2016 - · PDF fileAdditional space for answers is provided at the...
56
*X7477611* © National Qualications 2016 H Total marks 60 Attempt ALL questions. You may NOT use a calculator. Full credit will be given only to solutions which contain appropriate working. State the units for your answer where appropriate. Answers obtained by readings from scale drawings will not receive any credit. Write your answers clearly in the spaces provided in the answer booklet. The size of the space provided for an answer should not be taken as an indication of how much to write. It is not necessary to use all the space. Additional space for answers is provided at the end of the answer booklet. If you use this space you must clearly identify the question number you are attempting. Use blue or black ink. Before leaving the examination room you must give your answer booklet to the Invigilator; if you do not, you may lose all the marks for this paper. X747/76/11 Mathematics Paper 1 (Non-Calculator) THURSDAY, 12 MAY 9:00 AM 10:10 AM A/PB
Transcript of ational 4XDOLÛFDWLRQV 2016 - · PDF fileAdditional space for answers is provided at the...
*X7477611*©
NationalQualications2016 H
Total marks — 60
Attempt ALL questions.
You may NOT use a calculator.
Full credit will be given only to solutions which contain appropriate working.
State the units for your answer where appropriate.
Answers obtained by readings from scale drawings will not receive any credit.
Write your answers clearly in the spaces provided in the answer booklet. The size of the space provided for an answer should not be taken as an indication of how much to write. It is not necessary to use all the space.
Additional space for answers is provided at the end of the answer booklet. If you use this space you must clearly identify the question number you are attempting.
Use blue or black ink.
Before leaving the examination room you must give your answer booklet to the Invigilator; if you do not, you may lose all the marks for this paper.
X747/76/11 MathematicsPaper 1
(Non-Calculator)THURSDAY, 12 MAY
9:00 AM – 10:10 AM
A/PB
Page 02
FORMULAE LIST
Circle:
The equation x2 + y2 + 2gx + 2fy + c = 0 represents a circle centre (−g, −f ) and radius
The equation (x − a)2 + (y − b)2 = r2 represents a circle centre (a, b) and radius r.
Scalar Product: a.b = |a||b| cos θ, where θ is the angle between a and b
or a.b = a1b1 + a2b2 + a3b3 where a = 1 1
2 2
3 3
=and
a ba ba b
b⎛ ⎞ ⎛ ⎞⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎟ ⎟⎜ ⎜⎝ ⎠ ⎝ ⎠
.
Trigonometric formulae: sin (A ± B) = sin A cos B ± cos A sin B
cos (A ± B) = cos A cos B ± sin A sin B
sin 2A = 2 sin A cos A
cos 2A = cos2 A − sin2 A
= 2 cos2 A − 1
= 1 − 2 sin2 A
Table of standard derivatives:
Table of standard integrals:
f (x) f ′(x)
sin ax
cos ax
a cos ax
– a sin ax
f (x) ∫ f (x)dx
sin ax
cos ax
cos ax + c
sin ax + c
1– a1a
2 2+ –g f c .
Page 03
MARKSAttempt ALL questions
Total marks – 60
1. Find the equation of the line passing through the point ( )2, 3− which is parallel to the line with equation 4 7+ =y x .
2. Given that 312 8= +y x x, where 0>x , finddydx
.
3. A sequence is defined by the recurrence relation 1 103+ = +n nu u1 with 3 6=u .
(a) Find the value of u4.
(b) Explain why this sequence approaches a limit as → ∞n .
(c) Calculate this limit.
4. A and B are the points −7, 3( ) and ( )1, 5 .
AB is a diameter of a circle.
y
x
B
A
O
Find the equation of this circle.
2
3
1
1
2
3
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MARKS
5. Find ∫ ( )8cos 4 1+ x dx .
6. Functions f and g are defined on , the set of real numbers.
The inverse functions f −1 and g−1 both exist.
(a) Given ( ) 3 5= +f x x , find ( )1−f x .
(b) If g ( )2 = 7, write down the value of g−1 ( )7 .
7. Three vectors can be expressed as follows:
FG = −2i −6j + 3k GH = 3i + 9j −7k
EH = 2i + 3j + k
(a) Find FH.
(b) Hence, or otherwise, find FE.
8. Show that the line with equation = 3 5−y x is a tangent to the circle with equation 2 2 2 4 5 0+ + − − =x y x y and find the coordinates of the point of contact.
2
3
1
2
2
5
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MARKS 9. (a) Find the x-coordinates of the stationary points on the graph with equation
( )=y f x , where 3 2( ) 3 24= + −f x x x x.
(b) Hence determine the range of values of x for which the function f is strictly increasing.
10. The diagram below shows the graph of the function ( ) 4log=f x x, where 0>x .
y
xO (1, 0)
(4, 1)f x( )= log4 x
The inverse function, f −1, exists.
On the diagram in your answer booklet, sketch the graph of the inverse function.
11. (a) A and C are the points ( )1, 3, 2− and ( )4, , 4− 3 respectively.
Point B divides AC in the ratio 1 : 2.
Find the coordinates of B.
(b) kAC is a vector of magnitude 1, where 0>k .
Determine the value of k.
4
2
2
2
3
[Turn over
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12. The functions f and g are defined on , the set of real numbers by
( ) 22 4 5= − +f x x x and
( ) 3= −g x x .
(a)
Given ( ) ( )( )=h x f g x , show that ( ) 22 8 11= − +h x x x .
(b) Express ( )h x in the form p x q r+( ) +2.
13. Triangle ABD is right-angled at B with angles BAC = p and BAD = q and lengths as shown in the diagram below.
D
C
B
2
1
4 A
q
p
Show that the exact value of ( )cos −q p is 19 1785
.
2
3
5
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MARKS
14. (a) Evaluate log5 25.
(b) Hence solve ( )4 4 5log log 6 log 25x x+ − = , where 6>x .
15. The diagram below shows the graph with equation ( )=y f x , where
( ) ( )( )2= − −f x k x a x b .
y
(1, 9)
−5 O 4x
(a) Find the values of a, b and k.
(b) For the function ( ) ( )= −g x f x d , where d is positive, determine the range of
values of d for which ( )g x has exactly one real root.
[END OF QUESTION PAPER]
1
5
3
1
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[BLANK PAGE]
DO NOT wRITE ON ThIS PAGE
Write your answers clearly in the spaces provided in this booklet. The size of the space provided for an answer should not be taken as an indication of how much to write. It is not necessary to use all the space.
Additional space for answers is provided at the end of this booklet. If you use this space you must clearly identify the question number you are attempting.
Use blue or black ink.
Before leaving the examination room you must give this booklet to the Invigilator; if you do not you may lose all the marks for this paper.
FOR OFFICIAL USE
X747/76/01 Mathematics Paper 1 (Non-Calculator)Answer Booklet
Fill in these boxes and read what is printed below.
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Forename(s) Surname Number of seat
Day Month Year Scottish candidate number
*X7477601*
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H NationalQualications2016
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1.
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y
(1, 0)O
(4, 1)
x
f(x) = log4 x
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*X7477612*©
NationalQualications2016 H
Total marks — 70
Attempt ALL questions.
You may use a calculator.
Full credit will be given only to solutions which contain appropriate working.
State the units for your answer where appropriate.
Answers obtained by readings from scale drawings will not receive any credit.
Write your answers clearly in the spaces provided in the answer booklet. The size of the space provided for an answer should not be taken as an indication of how much to write. It is not necessary to use all the space.
Additional space for answers is provided at the end of the answer booklet. If you use this space you must clearly identify the question number you are attempting.
Use blue or black ink.
Before leaving the examination room you must give your answer booklet to the Invigilator; if you do not, you may lose all the marks for this paper.
X747/76/12 MathematicsPaper 2
THURSDAY, 12 MAY
10:30 AM – 12:00 NOON
A/PB
Page 02
FORMULAE LIST
Circle:
The equation x2 + y2 + 2gx + 2fy + c = 0 represents a circle centre (−g, −f ) and radius
The equation (x − a)2 + (y − b)2 = r2 represents a circle centre (a, b) and radius r.
Scalar Product: a.b = |a||b| cos θ, where θ is the angle between a and b
or a.b = a1b1 + a2b2 + a3b3 where a = 1 1
2 2
3 3
=and
a ba ba b
b⎛ ⎞ ⎛ ⎞⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎜ ⎜⎟ ⎟⎟ ⎟⎜ ⎜⎝ ⎠ ⎝ ⎠
.
Trigonometric formulae: sin (A ± B) = sin A cos B ± cos A sin B
cos (A ± B) = cos A cos B ± sin A sin B
sin 2A = 2 sin A cos A
cos 2A = cos2 A − sin2 A
= 2 cos2 A − 1
= 1 − 2 sin2 A
Table of standard derivatives:
Table of standard integrals:
f (x) f ′(x)
sin ax
cos ax
a cos ax
– a sin ax
f (x) ∫ f (x)dx
sin ax
cos ax
cos ax + c
sin ax + c
1– a1a
2 2+ –g f c .
Page 03
MARKSAttempt ALL questions
Total marks — 70
1. PQR is a triangle with vertices P( )0, 4− , Q ( )6,2− and R( )10,6 .
y
x
Q
O
P
R
M
(a) (i) State the coordinates of M, the midpoint of QR.
(ii) Hence find the equation of PM, the median through P.
(b) Find the equation of the line, L, passing through M and perpendicular to PR.
(c) Show that line L passes through the midpoint of PR.
2. Find the range of values for p such that x2 − 2x + 3 − p = 0 has no real roots.
[Turn over
1
2
3
3
3
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MARKS
3. (a) (i) Show that ( )1x + is a factor of 2x3 − 9x2 + 3x + 14.
(ii) Hence solve the equation 2x3 − 9x2 + 3x + 14 = 0.
(b) The diagram below shows the graph with equation y = 2x3 − 9x2 + 3x + 14.
The curve cuts the x-axis at A, B and C.
y = 2x3 − 9x2 + 3x + 14
y
xA B C
O
(i) Write down the coordinates of the points A and B.
(ii) Hence calculate the shaded area in the diagram.
4. Circles C1 and C2 have equations ( ) ( )2 25 6 9x y+ + − =
and x2 + y2 − 6x −16 = 0 respectively.
(a) Write down the centres and radii of C1 and C2.
(b) Show that C1 and C2 do not intersect.
2
3
1
4
4
3
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MARKS 5. The picture shows a model of a water molecule.
H H
O
Relative to suitable coordinate axes, the oxygen atom is positioned at
point ( )2 2 5−A , , .
The two hydrogen atoms are positioned at points ( )10 18 7−B , , and ( )4 6 21− −C , , as shown in the diagram below.
( )10 18 7−B , ,
( )2 2 5−A , ,
( )4 6 21− −C , ,
(a) Express AB and AC in component form.
(b) Hence, or otherwise, find the size of angle BAC.
6. Scientists are studying the growth of a strain of bacteria. The number of bacteria present is given by the formula
( ) 0 107200 tB t e= ,
where t represents the number of hours since the study began.
(a) State the number of bacteria present at the start of the study.
(b) Calculate the time taken for the number of bacteria to double.
[Turn over
2
4
1
4
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MARKS 7. A council is setting aside an area of land to create six fenced plots where local
residents can grow their own food.
Each plot will be a rectangle measuring x metres by y metres as shown in the diagram.
y
x
(a) The area of land being set aside is 108 m2.
Show that the total length of fencing, L metres, is given by
( ) 1449L x xx
= + .
(b) Find the value of x that minimises the length of fencing required.
3
6
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MARKS 8. (a) Express 5cos x − 2sin x in the form k cos (x + a),
where k > 0 and 0 < a < 2π.
(b) The diagram shows a sketch of part of the graph of y = 10 + 5cos x − 2sin x and the line with equation 12y = .
The line cuts the curve at the points P and Q.
y
x
P Q
O
y = 10 + 5cos x − 2sin xy = 12
Find the x-coordinates of P and Q.
9. For a function f , defined on a suitable domain, it is known that:
• ( ) 2 1xf xx+=′
• ( )9 40f =
Express ( )f x in terms of x.
[Turn over for next question
4
4
4
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MARKS
10. (a) Given that ( )1
2 27y x= + , find dydx
.
(b) Hence find 2
4 7
x dxx +
⌠⎮⌡
.
11. (a) Show that sin 2x tan x = 1 − cos 2x, where 3
2 2xπ π< < .
(b) Given that ( ) sin 2 tanf x x x= , find ( )f x′ .
[END OF QUESTION PAPER]
2
1
4
2
Write your answers clearly in the spaces provided in this booklet. The size of the space provided for an answer should not be taken as an indication of how much to write. It is not necessary to use all the space.
Additional space for answers is provided at the end of this booklet. If you use this space you must clearly identify the question number you are attempting.
Use blue or black ink.
Before leaving the examination room you must give this booklet to the Invigilator; if you do not you may lose all the marks for this paper.
FOR OFFICIAL USE
X747/76/02 Mathematics Paper 2Answer Booklet
Fill in these boxes and read what is printed below.
Full name of centre Town
Forename(s) Surname Number of seat
Day Month Year Scottish candidate number
*X7477602*
*X747760201*©
Mark
Date of birth
H NationalQualications2016
THURSDAY, 12 MAY
10:30 AM – 12:00 NOON
A/PB
*X747760202*Page 02
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