Can you invert a non square matrix

Zach 7, 1 1 gold badge 18 18 silver badges 49 49 bronze badges. Also you should make "guesses" for each of these questions, with "justification", so that we can help get to the root of your problem. So if you have a left or right inverse for a square matrix, it is both. Add a comment. Active Oldest Votes. Brian Fitzpatrick Brian Fitzpatrick Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The advantage to the exp. MASS::ginv also implements a pseudo-inverse, and comes with a standard R installation BenBolker - Cheers. I can't believe I didn't know about ginv - thanks for pointing it out.

Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end. Does ES6 make JavaScript frameworks obsolete? Featured on Meta. Now live: A fully responsive profile. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled. We divide every element by Now, you're saying, wait a minute - you said there was no matrix division.

There is no division by a matrix. You may multiply or divide a matrix by a scalar real number and the determinant is a scalar. Now that you know how to find the identity matrix by hand, let's talk practicality.

The calculator will do it for you. Whenever you need to access a matrix that you have created, just hit the Matrix key and choose the appropriate matrix. I would suggest that you start using Matrix 1, Matrix 2, etc, instead of Matrix, arrow down, enter.

It will go faster, and you will be doing a lot with these matrices. Enter the expression [A] -1 by going Matrix 1, and then hitting the x -1 key.

You may have to use the right or left arrow keys to scroll through the entire matrix to write it down. Please give exact answers whenever possible. One way of giving exact answers is to have the calculator convert the decimals to fractions for you.