2x2 by ad-bc, 3x3 by Laplace expansion, properties of determinants

Multiplication of square and non square matrices, Identity matrices and zero matrices

A 'concept test'.  3 multiple choice questions about a graphed normal distribution curve modelling IQ data.

No caculation 'concept test' on confidence intervals.  A single multiple choice question interpreting a CI.

A 'concept test' (no calculations) with 4 multiple-choice parts.

This question contains information on how Numbas works, from the beginning of an exam to the end.

Note: it was written for students who access Numbas exams through the Numbas LTI provider. Some of the information does not apply to standalone exams, or those delivered through a generic SCORM player.

(a) Read subscript notation to identify an element in a 3x3 matrix; (b) chose the correct subscripted name from a list for a given element in a 3x3 matrix.

Find the determinant of  a random (3x3) matrix.

Find the determinant of a random (2x2) matrix.

The student is shown a circuit diagram with three logic gates. It's always in the form (a OP b) OP (b OP c).

They have to fill in a truth table for the circuit. There is a step which expands the truth table, adding a column for each of the first two gates.

Multiple choice: select the correct (mxn) representation of the sizes of various matrices.

Calculate the product of two 3D vectors in column notation.

Calculate the dot products of (a) two 2D vectors and (b) two 3D vectors.

Part 1: multiply a 3D vector by an integer scalar
Part 2: perform scalar multiplication and subtraction in one expression with two 3D vectors

No description given

No description given

No description given

No description given

Calculation of bending resistance of wooden beams exposed to fire. The students have to calculate charring and effective cross sections ending in the bending resistance of the cross section.

No description given

• This practice test should only be used as a guide for Assessment 1: Online Quiz.
• The questions in this practice test are an indication only of the type of content to be covered - the content of the Online Quiz is not limited to the content in the practice tests.
• The actual Online quiz may contain different question types including mutliple choice questions and short answer responses.  
• The assessable Online Quiz will not be the same as the practice tests.

Using basic derivatives to calculate the gradient function of a hill $y=-e^x+b\ln\left(x\right)+c$, and then substituting values to find the gradient at specific distance from the sea. 

Drag a point into the specified quadrant. Uses jsxgraph

No description given

No description given

No description given

No description given

GIve a random linear program and ask the students to convert it to canonical form.