How would you go about doing this, I see it so often quoted as a method, but no-where can I find an example(adsbygoogle = window.adsbygoogle || []).push({});

This is what I was thinking

D=P^(-1)AP

Would it then follow that D^(-1)=P^(-1)A^(-1)P ?

My reasoning being:

DD^(-1)= P^(-1)APP^(-1)A^(-1)P

identity matrix= P^(-1)AA^(-1)P=identity matrix

and hence

A^(-1)=PD^(-1)P^(-1)

Just wondering if this is what they meant or if I've completely missed the point

Manny thanks in advance

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# I Finding the matrix inverse by diagonalisation

Have something to add?

Draft saved
Draft deleted

Loading...

Similar Threads for Finding matrix inverse |
---|

I Eigenproblem for non-normal matrix |

A Eigenvalues and matrix entries |

I How to find admissible functions for a domain? |

I How to find the matrix of the derivative endomorphism? |

I Finding the Kernel of a Matrix Map |

**Physics Forums | Science Articles, Homework Help, Discussion**