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You work with small rectangular arrays of numbers and practise combining them correctly. This helps you handle algebraic methods used in many later maths topics and in entry tests.
You should already be comfortable with basic arithmetic, especially multiplication and subtraction. It also helps if you can recognise rows and columns in a table of numbers.
Not confident yet? Work through Differentiation first.
One question from this skill's own question bank, shown with its full working.
The determinant of [[2, 3], [1, 4]] is…
Working: det = (2×4) − (3×1) = 8 − 3 = 5.
In university and tertiary foundation courses in Ghana, this topic usually appears early in algebra and linear algebra work. It supports later tertiary coursework and the kind of matrix questions that can appear in professional entrance tests.
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Other University Calculus & Matrices skills in Maths, at the same point in the course.
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6 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.