Question 1
Find the coefficient of x7 in the expansion of (2x 3)7
Circle your answer.
[1 mark]
Find the coefficient of x7 in the expansion of (2x 3)7
Circle your answer.
[1 mark]
The curve with equation y ln x is transformed by a stretch parallel to the x-axis with scale factor 2
Find the equation of the transformed curve.
Circle your answer.
[1 mark]
Given that is a small angle, find an approximation for cos 2
Circle your answer.
[1 mark]
The trapezium rule with 6 ordinates (5 strips) is to be used to find an approximation for the shaded area.
The values required to obtain this approximation are shown in the table below.
| x | 1 | 1.6 | 2.2 | 2.8 | 3.4 | 4 |
| y | 2.90988 | 1.26485 | 0.62305 | 0.32374 | 0.17263 | 0.09329 |
Use the trapezium rule with 6 ordinates (5 strips) to find an approximate value for the shaded area.
Give your answer to four decimal places.
[3 marks]
Using your answer to part (a) deduce an estimate for dx
[1 mark]
Show that the equation
2 log10 x log10 4
log10 (x
8)
has exactly one solution.
Fully justify your answer.
[5 marks]
Given that n is a positive integer, express
as a single fraction not involving surds.
[3 marks]
Hence, deduce that
is a rational number for all positive integer values of n
[1 mark]
The points P and Q have coordinates (6, 15) and (12, 19) respectively.
Find the coordinates of the midpoint of PQ
[1 mark]
Find the equation of the perpendicular bisector of PQ
Give your answer in the form ax by
c where a, b and c are integers.
[4 marks]
A circle passes through the points P and Q
The centre of the circle lies on the line with equation 2x 5y
30
Find the equation of the circle.
[3 marks]
The circle intersects the coordinate axes at n points.
State the value of n
[1 mark]
The curve with equation
for 360
x
360 is shown below.
Point A on the curve has coordinates (a, 0.5)
State the value of sin (180
a
)
[1 mark]
Find the exact value of sin (b
180
)
[2 marks]
Find the exact value of cos b
[3 marks]
The nth term of a sequence is un
The sequence is defined by
Find an expression, in terms of p, for u2
[1 mark]
It is given that u3 382
Show that p satisfies the equation
[3 marks]
It is given that the sequence is a decreasing sequence.
Find the value of u4 and the value of u5
[3 marks]
The limit of un as n tends to infinity is L
Write down an equation for L
[1 mark]
Find the value of L
[1 mark]
One of the rides at a theme park is a room where the floor and ceiling both move up and down for 10 seconds.
At time t seconds after the ride begins, the distance f metres of the floor above the ground is
At time t seconds after the ride begins, the distance c metres of the ceiling above the ground is
The ride is shown in the diagram below.
Show that the initial distance between the floor and ceiling is 8 metres.
[1 mark]
Show that the distance d metres between the floor and ceiling at time t is given by
where R and are positive constants to be found.
[5 marks]
Hence, find the minimum distance between the ceiling and the floor.
Give your answer to the nearest centimetre.
[2 marks]
The function f is defined by
The curve with equation y f (x) is shown below.
State the value of a
[1 mark]
On the diagram above, sketch the curve with equation
and
sketch the line with equation
[4 marks]
Explain why the solution to the equation
must also be a solution to the equation
[1 mark]
Use the Newton-Raphson method with x0 0 to find an approximate solution, x3, to the equation
Give your answer to four decimal places.
[3 marks]
The area, A, bounded by the curve with equation y 2x, the x-axis, the y-axis and the line x
4 is approximated using eight rectangles of equal width as shown in the diagram below.
Show that the exact area of the largest rectangle is
[2 marks]
The areas of these rectangles form a geometric sequence with common ratio
Find the exact value of the total area of the eight rectangles. Give your answer in the form k(1
2
) where k is a rational number.
[3 marks]
More accurate approximations for A can be found by increasing the number, n, of rectangles used.
Find the exact value of the limit of the approximations for A as n
[3 marks]
The curve with equation
has a single stationary point at P as shown in the diagram below.
Show that the y-coordinate of P satisfies the equation
[7 marks]
Hence, find the coordinates of P
[2 marks]
Given that
find the values of A and B
[3 marks]
An empty container, in the shape of a cuboid, has length 1.6 metres, width 1.25 metres and depth 0.5 metres, as shown in the diagram below.
The container has a small hole in the bottom.
Water is poured into the container at a rate of 0.16 cubic metres per minute.
At time t minutes after the container starts to be filled, the depth of water is d metres and water leaks out at a rate of 036d2 cubic metres per minute.
At time t minutes after the container starts to be filled, the volume of water in the container is V cubic metres.
Determine how long it takes to fill the container with water.
Give your answer to the nearest minute.
[2 marks]
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