Check out this graph sketcher: http://physics-animations.com/graph.html
"Eat, live and breathe Mathematics."
Do not leave any personal details in posts.
Monday, 23 June 2014
Oxbridge Mathematics
Oxford Mathematics
Cambridge Mathematics
Link to some recommended reading: Recommended reading
Maths Helper has some great resources and tough practice questions
Monday, 9 June 2014
3rd Year Exam Tuning
TOTAL 28 marks
1. z is the difference between the product of x and y and half their sum. Write down a formula for z and make y the subject. Use your answer to find the value of y when x=3 and z=-2
[4 marks]
2. Solve \[\frac x 4 -7 = \frac x 7\]
[3 marks]
3. A room measures 3.2m x 5.6m. A square tile with edge 20cm cost £1.47. What will it cost to tile the room?
[3 marks]
4. Find the equation of the line that passes through (3,-2) and (-7,4). Rearrange your answer to the form $ax + by = c$ where a,b and c are integers.
[4 marks]
5. The bearing of X from Z is $088^\circ$. What is the bearing of Z from X?
[1 marks]
6. Make $x$ the subject of \[y=\frac {x+2}{3-2x}\]
[4 marks]
7. Expand $(3x-4y)^2$
[2 marks]
8. Factorise $6x^2+7x-20$
[3 marks]
9. Find coordinates of the image of the point (-1,4) after:
- A reflection in the line y=-x
- A rotation $90^\circ$ clockwise about (0,-1)
- A translation $\left(\begin{array} \left \\ 4 \\ -2 \end{array}\right)$
- An enlargement scale factor 2, centre (0,1)
[4 marks]
Friday, 6 June 2014
4th Year Exam Tuning
TOTAL 20 marks
1. The point (1, -5) is on this line $2x+3y+k=0$ What is the value of k?
[2 marks]
2. Consider this line: $y=3-2x$
- What is the gradient of this line?
- What is the equation of a line which is PARALELL to the line but has y intercept -5?
- Write down the equation of a line PARALLELto $y=3-2x$ which passes through (-9,7)
[5 marks]
3. Copy and complete the table.
\begin{array}{|c|c|c|}
\hline
\text{No. of siblings} & \text{Frequency} & \text{... } \\ \hline
\text{0} & 8 & \\ \hline
\text{1} & 9 & \\ \hline
\text{2} & 4 & \\ \hline
\text{3} & 2 & \\ \hline
\end{array}
Use it to:
a. Find the mean
b. Find the median (note it is not a grouped table of data!)
[4 marks]
4. Copy and complete the table and use it find an estimate of the mean height. \begin{array}{|c|c|c|} \hline \text{Height in cm} & \text{Frequency} & \text{M.P. $\times$ F} \\ \hline \text{20 $\leq$ h < 25} & 2 \\ \hline \text{25 $\leq$ h < 30} & 13\\ \hline \text{30 $\leq$ h < 35} & 14\\ \hline \text{35 $\leq$ h < 40} & 7\\ \hline \end{array}
[3 marks]
5. Copy and complete the table for $y=7+2x-x^2$ \begin{array}{|c|c|c|c|c|c|c|c|c|} \hline x & -3 & -2 & -1 & 0 & 1 & 2 & 3 & 4 \\ \hline y & -8 & & & & & & & \\ \hline \end{array}
- Plot the points on a set of axes and join to form a smooth curve
- Use your graph to solve the equation $7+2x-x^2=0$
- Use your graph to find the solutions to $7+2x-x^2=1$
[6 marks]