Did you mean: diagonalising 3x3 matrix?

#### Diagonalisation of 2x2 Matrices with 2 Real Independent EigenValues

It is often useful to be able to transform a matrix into a matrix with non zero entries only on the diagonal. If the matrix A arises in a system of differential equations, the system often becomes easier to solve, and a phase space diagram becomes...

https://astarmathsandphysics.com/university-maths-notes/matrices-and-linear-algebra/1916-diagonalisation-of-2x2-matrices-with-2-real-independent-eigenvalues.html

Results

**1**-**1**of**1**