Questions - AQA FP1 - A-Level Maths

Write down the values of $\alpha + \beta$ and $\alpha \beta$.
Find a quadratic equation, with integer coefficients, which has roots $\alpha ^ { 2 }$ and $\beta ^ { 2 }$.
Hence find the values of $\alpha ^ { 2 }$ and $\beta ^ { 2 }$.

AQA FP1 2011 January Q2

Find, in terms of $p$ and $q$, the value of the integral $\int _ { p } ^ { q } \frac { 2 } { x ^ { 3 } } \mathrm {~d} x$.
Show that only one of the following improper integrals has a finite value, and find that value:
1. $\int _ { 0 } ^ { 2 } \frac { 2 } { x ^ { 3 } } \mathrm {~d} x$;
2. $\int _ { 2 } ^ { \infty } \frac { 2 } { x ^ { 3 } } \mathrm {~d} x$.

AQA FP1 2011 January Q3

Write down the $2 \times 2$ matrix corresponding to each of the following transformations:
1. a rotation about the origin through $90 ^ { \circ }$ clockwise;
2. a rotation about the origin through $180 ^ { \circ }$.
The matrices $\mathbf { A }$ and $\mathbf { B }$ are defined by $$\mathbf { A } = \left[ \begin{array} { r r } 2 & 4
- 1 & - 3 \end{array} \right] , \quad \mathbf { B } = \left[ \begin{array} { l l } - 2 & 1
- 4 & 3 \end{array} \right]$$
1. Calculate the matrix $\mathbf { A B }$.
2. Show that $( \mathbf { A } + \mathbf { B } ) ^ { 2 } = k \mathbf { I }$, where $\mathbf { I }$ is the identity matrix, for some integer $k$.
Describe the single geometrical transformation, or combination of two geometrical transformations, represented by each of the following matrices:
1. $\mathbf { A } + \mathbf { B }$;
2. $( \mathbf { A } + \mathbf { B } ) ^ { 2 }$;
3. $( \mathbf { A } + \mathbf { B } ) ^ { 4 }$.

AQA FP1 2011 January Q4

4 Find the general solution of the equation $$\sin \left( 4 x - \frac { 2 \pi } { 3 } \right) = - \frac { 1 } { 2 }$$ giving your answer in terms of $\pi$.
(6 marks)

AQA FP1 2011 January Q5

It is given that $z _ { 1 } = \frac { 1 } { 2 } - \mathrm { i }$.
1. Calculate the value of $z _ { 1 } ^ { 2 }$, giving your answer in the form $a + b \mathrm { i }$.
2. Hence verify that $z _ { 1 }$ is a root of the equation $$z ^ { 2 } + z ^ { * } + \frac { 1 } { 4 } = 0$$
Show that $z _ { 2 } = \frac { 1 } { 2 } + \mathrm { i }$ also satisfies the equation in part (a)(ii).
Show that the equation in part (a)(ii) has two equal real roots.

AQA FP1 2011 January Q6

6 The diagram shows a circle $C$ and a line $L$, which is the tangent to $C$ at the point $( 1,1 )$. The equations of $C$ and $L$ are $$x ^ { 2 } + y ^ { 2 } = 2 \text { and } x + y = 2$$ respectively.
\includegraphics[max width=\textwidth, alt={}, center]{a4c5d61d-1af9-449e-b27a-d1e656dcd75a-4_760_1301_552_395} The circle $C$ is now transformed by a stretch with scale factor 2 parallel to the $x$-axis. The image of $C$ under this stretch is an ellipse $E$.

On the diagram below, sketch the ellipse $E$, indicating the coordinates of the points where it intersects the coordinate axes.
Find equations of:
1. the ellipse $E$;
2. the tangent to $E$ at the point $( 2,1 )$.
  \includegraphics[max width=\textwidth, alt={}, center]{a4c5d61d-1af9-449e-b27a-d1e656dcd75a-4_743_1301_1921_420}

AQA FP1 2011 January Q7

7 A graph has equation $$y = \frac { x - 4 } { x ^ { 2 } + 9 }$$

Explain why the graph has no vertical asymptote and give the equation of the horizontal asymptote.
Show that, if the line $y = k$ intersects the graph, the $x$-coordinates of the points of intersection of the line with the graph must satisfy the equation $$k x ^ { 2 } - x + ( 9 k + 4 ) = 0$$
Show that this equation has real roots if $- \frac { 1 } { 2 } \leqslant k \leqslant \frac { 1 } { 18 }$.
Hence find the coordinates of the two stationary points on the curve.
(No credit will be given for methods involving differentiation.)

AQA FP1 2011 January Q8

The equation $$x ^ { 3 } + 2 x ^ { 2 } + x - 100000 = 0$$ has one real root. Taking $x _ { 1 } = 50$ as a first approximation to this root, use the Newton-Raphson method to find a second approximation, $x _ { 2 }$, to the root.
1. Given that $S _ { n } = \sum _ { r = 1 } ^ { n } r ( 3 r + 1 )$, use the formulae for $\sum _ { r = 1 } ^ { n } r ^ { 2 }$ and $\sum _ { r = 1 } ^ { n } r$ to show that $$S _ { n } = n ( n + 1 ) ^ { 2 }$$
2. The lowest integer $n$ for which $S _ { n } > 100000$ is denoted by $N$. Show that $$N ^ { 3 } + 2 N ^ { 2 } + N - 100000 > 0$$
Find the value of $N$, justifying your answer.

AQA FP1 2012 January Q2

2 Show that only one of the following improper integrals has a finite value, and find that value:

$\quad \int _ { 8 } ^ { \infty } x ^ { - \frac { 2 } { 3 } } \mathrm {~d} x$;
$\quad \int _ { 8 } ^ { \infty } x ^ { - \frac { 4 } { 3 } } \mathrm {~d} x$.

AQA FP1 2012 January Q3

Solve the following equations, giving each root in the form $a + b \mathrm { i }$ :
1. $x ^ { 2 } + 9 = 0$;
2. $( x + 2 ) ^ { 2 } + 9 = 0$.
1. Expand $( 1 + x ) ^ { 3 }$.
2. Express $( 1 + 2 \mathrm { i } ) ^ { 3 }$ in the form $a + b \mathrm { i }$.
3. Given that $z = 1 + 2 \mathrm { i }$, find the value of $$z ^ { * } - z ^ { 3 }$$

AQA FP1 2012 January Q4

Use the formulae for $\sum _ { r = 1 } ^ { n } r ^ { 2 }$ and $\sum _ { r = 1 } ^ { n } r ^ { 3 }$ to show that $$\sum _ { r = 1 } ^ { n } r ^ { 2 } ( 4 r - 3 ) = k n ( n + 1 ) \left( 2 n ^ { 2 } - 1 \right)$$ where $k$ is a constant.
Hence evaluate $$\sum _ { r = 20 } ^ { 40 } r ^ { 2 } ( 4 r - 3 )$$ (2 marks)

AQA FP1 2012 January Q5

5 The diagram below (not to scale) shows a part of a curve $y = \mathrm { f } ( x )$ which passes through the points $A ( 2 , - 10 )$ and $B ( 5,22 )$.

1. On the diagram, draw a line which illustrates the method of linear interpolation for solving the equation $\mathrm { f } ( x ) = 0$. The point of intersection of this line with the $x$-axis should be labelled $P$.
2. Calculate the $x$-coordinate of $P$. Give your answer to one decimal place.
1. On the same diagram, draw a line which illustrates the Newton-Raphson method for solving the equation $\mathrm { f } ( x ) = 0$, with initial value $x _ { 1 } = 2$. The point of intersection of this line with the $x$-axis should be labelled $Q$.
2. Given that the gradient of the curve at $A$ is 8 , calculate the $x$-coordinate of $Q$. Give your answer as an exact decimal.
  \includegraphics[max width=\textwidth, alt={}, center]{f9345653-d426-4350-bf1d-901506211078-3_876_1063_1779_523}

AQA FP1 2012 January Q6

6 Find the general solution of each of the following equations:

$\quad \tan \left( \frac { x } { 2 } - \frac { \pi } { 4 } \right) = \frac { 1 } { \sqrt { 3 } }$;
$\quad \tan ^ { 2 } \left( \frac { x } { 2 } - \frac { \pi } { 4 } \right) = \frac { 1 } { 3 }$.

AQA FP1 2012 January Q7

7 A hyperbola $H$ has equation $$\frac { x ^ { 2 } } { 9 } - y ^ { 2 } = 1$$

Find the equations of the asymptotes of $H$.
The asymptotes of $H$ are shown in the diagram opposite. On the same diagram, sketch the hyperbola $H$. Indicate on your sketch the coordinates of the points of intersection of $H$ with the coordinate axes.
The hyperbola $H$ is now translated by the vector $\left[ \begin{array} { r } - 3
0 \end{array} \right]$.
1. Write down the equation of the translated curve.
2. Calculate the coordinates of the two points of intersection of the translated curve with the line $y = x$.
From your answers to part (c)(ii), deduce the coordinates of the points of intersection of the original hyperbola $H$ with the line $y = x - 3$.
\includegraphics[max width=\textwidth, alt={}, center]{f9345653-d426-4350-bf1d-901506211078-4_675_1157_1932_495}

AQA FP1 2012 January Q8

8 The diagram below shows a rectangle $R _ { 1 }$ which has vertices $( 0,0 ) , ( 3,0 ) , ( 3,2 )$ and $( 0,2 )$.

On the diagram, draw:
1. the image $R _ { 2 }$ of $R _ { 1 }$ under a rotation through $90 ^ { \circ }$ clockwise about the origin;
2. the image $R _ { 3 }$ of $R _ { 2 }$ under the transformation which has matrix $$\left[ \begin{array} { l l } 4 & 0
  0 & 2 \end{array} \right]$$
Find the matrix of:
1. the rotation which maps $R _ { 1 }$ onto $R _ { 2 }$;
2. the combined transformation which maps $R _ { 1 }$ onto $R _ { 3 }$.
  \includegraphics[max width=\textwidth, alt={}, center]{f9345653-d426-4350-bf1d-901506211078-5_913_910_1228_598}

AQA FP1 2012 January Q9

9 A curve has equation $$y = \frac { x } { x - 1 }$$

Find the equations of the asymptotes of this curve.
Given that the line $y = - 4 x + c$ intersects the curve, show that the $x$-coordinates of the points of intersection must satisfy the equation $$4 x ^ { 2 } - ( c + 3 ) x + c = 0$$
It is given that the line $y = - 4 x + c$ is a tangent to the curve.
1. Find the two possible values of $c$.
  (No credit will be given for methods involving differentiation.)
2. For each of the two values found in part (c)(i), find the coordinates of the point where the line touches the curve.

AQA FP1 2013 January Q1

1 A curve passes through the point (1,3) and satisfies the differential equation $$\frac { \mathrm { d } y } { \mathrm {~d} x } = \frac { x } { 1 + x ^ { 3 } }$$ Starting at the point ( 1,3 ), use a step-by-step method with a step length of 0.1 to estimate the value of $y$ at $x = 1.2$. Give your answer to four decimal places.

AQA FP1 2013 January Q2

Solve the equation $w ^ { 2 } + 6 w + 34 = 0$, giving your answers in the form $p + q \mathrm { i }$, where $p$ and $q$ are integers.
It is given that $z = \mathrm { i } ( 1 + \mathrm { i } ) ( 2 + \mathrm { i } )$.
1. Express $z$ in the form $a + b \mathrm { i }$, where $a$ and $b$ are integers.
2. Find integers $m$ and $n$ such that $z + m z ^ { * } = n \mathrm { i }$.

AQA FP1 2013 January Q3

Find the general solution of the equation $$\sin \left( 2 x + \frac { \pi } { 4 } \right) = \frac { \sqrt { 3 } } { 2 }$$ giving your answer in terms of $\pi$.
Use your general solution to find the exact value of the greatest solution of this equation which is less than $6 \pi$.

AQA FP1 2013 January Q4

4 Show that the improper integral $\int _ { 25 } ^ { \infty } \frac { 1 } { x \sqrt { x } } \mathrm {~d} x$ has a finite value and find that value.

AQA FP1 2013 January Q5

5 The roots of the quadratic equation $$x ^ { 2 } + 2 x - 5 = 0$$ are $\alpha$ and $\beta$.

Write down the value of $\alpha + \beta$ and the value of $\alpha \beta$.
Calculate the value of $\alpha ^ { 2 } + \beta ^ { 2 }$.
Find a quadratic equation which has roots $\alpha ^ { 3 } \beta + 1$ and $\alpha \beta ^ { 3 } + 1$.

AQA FP1 2013 January Q6

The matrix $\mathbf { X }$ is defined by $\left[ \begin{array} { l l } 1 & 2
3 & 0 \end{array} \right]$.
1. Given that $\mathbf { X } ^ { 2 } = \left[ \begin{array} { c c } m & 2
  3 & 6 \end{array} \right]$, find the value of $m$.
2. Show that $\mathbf { X } ^ { 3 } - 7 \mathbf { X } = n \mathbf { I }$, where $n$ is an integer and $\mathbf { I }$ is the $2 \times 2$ identity matrix.
It is given that $\mathbf { A } = \left[ \begin{array} { r r } 1 & 0
0 & - 1 \end{array} \right]$.
1. Describe the geometrical transformation represented by $\mathbf { A }$.
2. The matrix $\mathbf { B }$ represents an anticlockwise rotation through $45 ^ { \circ }$ about the origin. Show that $\mathbf { B } = k \left[ \begin{array} { r r } 1 & - 1
  1 & 1 \end{array} \right]$, where $k$ is a surd.
3. Find the image of the point $P ( - 1,2 )$ under an anticlockwise rotation through $45 ^ { \circ }$ about the origin, followed by the transformation represented by $\mathbf { A }$.
  $7 \quad$ The variables $y$ and $x$ are related by an equation of the form $$y = a x ^ { n }$$ where $a$ and $n$ are constants. Let $Y = \log _ { 10 } y$ and $X = \log _ { 10 } x$.

AQA FP1 2013 January Q8

Show that $$\sum _ { r = 1 } ^ { n } 2 r \left( 2 r ^ { 2 } - 3 r - 1 \right) = n ( n + p ) ( n + q ) ^ { 2 }$$ where $p$ and $q$ are integers to be found.
Hence find the value of $$\sum _ { r = 11 } ^ { 20 } 2 r \left( 2 r ^ { 2 } - 3 r - 1 \right)$$ (2 marks)

AQA FP1 2013 January Q9

9 An ellipse is shown below.
\includegraphics[max width=\textwidth, alt={}, center]{cf9337b9-b766-4ce5-967c-5d7522e2aa42-5_453_633_365_699} The ellipse intersects the $x$-axis at the points $A$ and $B$. The equation of the ellipse is $$\frac { ( x - 4 ) ^ { 2 } } { 4 } + y ^ { 2 } = 1$$

Find the $x$-coordinates of $A$ and $B$.
The line $y = m x ( m > 0 )$ is a tangent to the ellipse, with point of contact $P$.
1. Show that the $x$-coordinate of $P$ satisfies the equation $$\left( 1 + 4 m ^ { 2 } \right) x ^ { 2 } - 8 x + 12 = 0$$
2. Hence find the exact value of $m$.
3. Find the coordinates of $P$.

AQA FP1 2007 June Q1

1 The matrices $\mathbf { A }$ and $\mathbf { B }$ are given by $$\mathbf { A } = \left[ \begin{array} { l l } 2 & 1
3 & 8 \end{array} \right] , \quad \mathbf { B } = \left[ \begin{array} { l l } 1 & 2
3 & 4 \end{array} \right]$$ The matrix $\mathbf { M } = \mathbf { A } - 2 \mathbf { B }$.

Show that $\mathbf { M } = n \left[ \begin{array} { r r } 0 & - 1
- 1 & 0 \end{array} \right]$, where $n$ is a positive integer.
(2 marks)
The matrix $\mathbf { M }$ represents a combination of an enlargement of scale factor $p$ and a reflection in a line $L$. State the value of $p$ and write down the equation of $L$.
Show that $$\mathbf { M } ^ { 2 } = q \mathbf { I }$$ where $q$ is an integer and $\mathbf { I }$ is the $2 \times 2$ identity matrix.

Questions — AQA FP1 (176 questions)

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