Matrix inverse and equations solver
Find the inverse of a matrix by the adjoint method - the determinant, minors, cofactors and adjoint shown - or solve simultaneous linear equations by the matrix method, X = A⁻¹B, as ISC Mathematics asks.
Practise on real ISC questions
- Solve the following system of linear equations using matrices… 2020
- Find the value of $\mu$ if the following system of equations is consistent: $2x + 3y - 8 = 0$… 2025 Improvement
- Evaluate… 2018 Specimen
- What is the multiplicative inverse of matrix $A$? 2022 Specimen
- If $A = \begin{bmatrix} 0 & 5 & -y \\ -5 & 0 & x \\ y & -x & 0 \end{bmatrix}$, then the value of… 2025 Practice
- If a matrix $A = [a_{ij}]_{2 \times 2}$, where… 2025 Practice
- If $A$ is a $3 \times 3$ matrix such that… 2023 Specimen
- To raise money for an orphanage, students of three schools A, B and C organised an exhibition in their… 2026 Specimen
- For what value of $k$ inverse does not exist for the matrix $\begin{bmatrix} 1 & 2 \\ k & 6 \end{bmatrix}$: 2021 Specimen
- The system of linear equations $x + y + z = 6$, $x + \lambda y + 2z = 7$ and $3x + y + z = 12$ has a unique… 2026 Improvement
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