Question about computing the determinant of matrix of indeterminate variables

[Yusen_Liu]

Hi all, I’ve been struggling with computing the determinant of the matrix of indeterminate variables.
My code is as follows:

using TypedPolynomials
using LinearAlgebra
@polyvar p1 p2 p3 p4 p5 p6
A = [p1 p2 p3]
AT=transpose(A)
det(AT*A)

I don’t know if there’s a way to compute the determinant since the result always shows 0.

[saschatimme]

You compute the determinant of a rank 1 matrix which is always 0

[Yusen_Liu]

Oh! Thanks!!

[Tamas_Papp]

Welcome to this forum! Also, please quote your code.

PSA: how to quote code with backticks

This is a short post on using backticks (` and ```) to quote code, with the intention of benefiting users who are confused by this feature of the site. The intention is to make it linkable when necessary. Why By quoting your code, you get a monospaced font (which preserves indentation) and syntax highlighting. This helps people who read your code and want to help you. Displayed code looks like this: function displayed_code(x::Int, y::Int) if x < y println("x is smaller") else …

[Yusen_Liu]

Thank you so much for reminding me of quoting the code.