### There are 17 results

Broad Topics >

Functions and Graphs > Quadratic functions

##### Age 14 to 16 Challenge Level:

Substitute -1, -2 or -3, into an algebraic expression and you'll
get three results. Is it possible to tell in advance which of those
three will be the largest ?

##### Age 11 to 14

Alf Coles writes about how he tries to create 'spaces for exploration' for the students in his classrooms.

##### Age 11 to 14 Challenge Level:

If you have only 40 metres of fencing available, what is the maximum area of land you can fence off?

##### Age 14 to 18 Challenge Level:

Here is a pattern composed of the graphs of 14 parabolas. Can you
find their equations?

##### Age 16 to 18 Challenge Level:

This is a beautiful result involving a parabola and parallels.

##### Age 14 to 18 Challenge Level:

The illustration shows the graphs of fifteen functions. Two of them have equations y=x^2 and y=-(x-4)^2. Find the equations of all the other graphs.

##### Age 14 to 16 Challenge Level:

Here are some more quadratic functions to explore. How are their
graphs related?

##### Age 14 to 16 Challenge Level:

Can you suggest a curve to fit some experimental data? Can you work out where the data might have come from?

##### Age 14 to 18 Challenge Level:

This task develops knowledge of transformation of graphs. By
framing and asking questions a member of the team has to find out
which mathematical function they have chosen.

##### Age 14 to 16 Challenge Level:

Explore what happens when you draw graphs of quadratic equations
with coefficients based on a geometric sequence.

##### Age 14 to 18 Challenge Level:

Take a few whole numbers away from a triangle number. If you know
the mean of the remaining numbers can you find the triangle number
and which numbers were removed?

##### Age 16 to 18 Challenge Level:

An inequality involving integrals of squares of functions.

##### Age 14 to 18 Challenge Level:

The illustration shows the graphs of twelve functions. Three of
them have equations y=x^2, x=y^2 and x=-y^2+2. Find the equations
of all the other graphs.

##### Age 14 to 16 Challenge Level:

The squares of any 8 consecutive numbers can be arranged into two sets of four numbers with the same sum. True of false?

##### Age 14 to 16 Challenge Level:

Clearly if a, b and c are the lengths of the sides of an equilateral triangle then a^2 + b^2 + c^2 = ab + bc + ca. Is the converse true?

##### Age 16 to 18 Challenge Level:

Find a condition which determines whether the hyperbola y^2 - x^2 =
k contains any points with integer coordinates.

##### Age 16 to 18 Challenge Level:

In y = ax +b when are a, -b/a, b in arithmetic progression. The
polynomial y = ax^2 + bx + c has roots r1 and r2. Can a, r1, b, r2
and c be in arithmetic progression?