Determinant of 2x2 and notation

Input answer only.

Simple questions on interval notation. If you are not randomising the order of your questions please turn on randomise choices in these questions.

Putting a pair of linear equations into matrix notation and then solving by finding the inverse of the coefficient matrix. 

The student must enter a number in scientific notation, with separate boxes for significand and exponent. They only get the marks if both elements are correct.

Simple questions on interval notation. If you are not randomising the order of your questions please turn on randomise choices in these questions.

Simple questions on interval notation. If you are not randomising the order of your questions please turn on randomise choices in these questions.

Simple questions on interval notation. If you are not randomising the order of your questions please turn on randomise choices in these questions.

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This shows how to use variable name annotations inside \simplify to display a 3D vector in terms of the standard unit vectors $\boldsymbol{i}$, $\boldsymbol{j}$, $\boldsymbol{k}$

Converting units, scientific notation, currency conversions 

rebel

rebelmaths

Application of the Poisson distribution given expected number of events per interval.

Finding probabilities using the Poisson distribution.

aij  notation and definition of the order of a matrix.

This shows how to define a question variable whose value is a variable name with a few annotations added, so it's more convenient to use.

The question variable 'x' is defined to be the variable name vec:underline:x.

Application of the binomial distribution given probabilities of success of an event.

Finding probabilities using the binomial distribution.

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Determine the correct interval notation for various sets.

Questions used in a university course titled "Group theory".

The questions deal with permutations written in cycle or two-line notation.

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Questions which try to emphasise that f(x) does not mean f times x.

Practice use of summation notation for regression question.

rebelmaths

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Display a number like "1234" as "1,234".

This question is out of date: the formatnumber function can format numbers using several different notational styles.

Putting a pair of linear equations into matrix notation and then solving by finding the inverse of the coefficient matrix. 

The student must enter a number in scientific notation, with separate boxes for significand and exponent. They only get the marks if both elements are correct.

Numbas can now understand and use several different styles of notation for numbers.

This question shows off all the supported styles, both for display in text and in the answers to number entry parts.

This question shows how to ask for a number in scientific notation, by asking for the significand and exponent separately and using a custom marking algorithm in the gap-fill part to put the two pieces together.

Answers not in standard form, i.e. with a significand not in $[1,10)$, are accepted but given partial marks.

Find a regression equation given 12 months data on temperature and sales of a drink.