27 results.

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• Question in How-tos

No description given

• Mixed fractions
Doesn't work
Question in How-tos

No description given

• Question

Compute a table of values for an exponential function. The student input is now disconnected from the graph so that they slide the points on the graph after they input the values and the answer fields are not updated. Now includes a graph in advice.

• Question

Given a linear programming problem in standard form, write down the dual problem.

• Question

Given a linear programming problem in standard form, write down the dual problem.

• Beer Lambert Law
Doesn't work
Question in CHY1205

Use two points on a line graph to calculate the gradient and $y$-intercept and hence the equation of the straight line running through both points.

The answer box for the third part plots the function which allows the student to check their answer against the graph before submitting.

This particular example has a positive gradient.

• Question

Doesn't work - used the old extension.

Mark a GeoGebra worksheet.

Needs a worked solution.

• Minimal resume
Doesn't work
Exam (1 question)

• Question

A sneak peek at a really clever integration of GeoGebra with Numbas.

• Question in How-tos

An example of using the GeoGebra extension to ask the student to create a geometric construction, with marking and steps.

• Random image
Doesn't work
Question in How-tos

No description given

• Question

Given data on population mean and population standard deviation and three sampling sizes, calculate the probabilities that the sample means are within a specified distance from the population mean.

• Factorise four numbers
Doesn't work
Question

Pick four numbers from $1900\dots 2015$ and ask the student to factorise them.

Custom marking scripts make sure the student has entered a complete factorisation.

• Question

Factorising 5 to 7 digit numbers into a product of prime powers.

Uses the marking algorithms from question 1 of this CBA

• Question

A box contains $n$ balls, $m$ of these are red the rest white.

$r$ are drawn without replacement.

What is the probability that at least one of the $r$ is red?

• Question

Trying out something: get the student to enter a set for each of "regular singular points" and "essential singular points".

Find and classify singular points of a second-order ordinary differential equation.  One equation is chosen from a selection of 10.

• Question

Given $6$ vectors in $\mathbb{R^4}$ and given that they span $\mathbb{R^4}$ find a  basis.

• Question

Given a matrix in row reduced form use this to find bases for the null, column and row spaces of the matrix.

• Question

Write down the Newton-Raphson formula for finding a numerical solution to the equation $e^{mx}+bx-a=0$. If $x_0=1$ find $x_1$.

Included in the Advice of this question are:

6 iterations of the method.

Graph of the NR process using jsxgraph. Also user interaction allowing change of starting value and its effect on the process.

• Question

Cofactors Determinant and inverse of a 3x3 matrix.

• Question in CHY1205

This question aims to test understanding and ability to use the laws of indices.

• Question

This question tests the students ability to factorise simple quadratic equations (where the coefficient of the x^2 term is 1) and use the factorised equation to solve the equation when it is equal to 0.

• Diff
Doesn't work
Question

No description given

• Exam (1 question) in SDS

Solve a pair of linear equations by writing an equivalent matrix equation.

• Question

Simplifying expressions such as $b^{\log_b(x)}$ and $b^{\log_b(x)}$.

• BODMAS - Basic
Doesn't work
Question

Working with BODMAS

• Question

This exercise will help you round off decimals to given decimal places.