Matrices
14 topics recommended
Build a complete understanding of matrices from notation to applications.
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20 mixed WAEC/JAMB-style questions with 60 seconds per question and a skill-by-skill revision report.
Matrix Notation, Order and Entries
Read matrices, state their order, and locate their entries.
Types of Matrices and Transpose
Classify common matrices and form the transpose by swapping rows and columns.
Equality, Addition and Subtraction
Decide when matrices are equal and add or subtract compatible matrices entry by entry.
Scalar Multiplication and Linear Combinations
Multiply every entry by a scalar and combine matrices in expressions.
Matrix Multiplication
Multiply matrices using row-by-column products and check the order of the result.
Determinants and Singular Matrices
Find a 2 × 2 determinant and use it to test whether a matrix is singular.
Matrices and Simultaneous Equations
Represent and solve two linear equations using matrix form and an inverse.
Matrix Transformations and Applications
Use matrices to represent transformations and model real data.
Matrix Reasoning and Exam Problems
Choose methods, show clear working, and solve mixed matrix problems confidently.
Row Reduction and Gaussian Elimination
Use elementary row operations to simplify matrices and solve systems.
Three-Variable Systems in Matrix Form
Set up and solve three simultaneous equations using matrices.
Determinants, Area and Scale Factors
Interpret a 2 × 2 determinant as signed area scale and orientation.