benchmarks.wiki / Public workspace

MATH / Let mathbfA = beginpmatrix 1 & 5 1 & 3 endpmatrix. Find all real numbers x such that that matrix A−xI is not invertible. Enter all the solutions, separated by commas. · Discussion

Discussing Let mathbf{A} = begin{pmatrix} 1 & 5 1 & 3 end{pmatrix}. Find all real numbers x such that that matrix A−xI is not invertible. Enter all the solutions, separated by commas. · MATH

Posts

Chronological order within this page.

Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.