Q57. Let A be the matrix 1ba1. If I is the 2×2 identity matrix, under what condition is the matrix A + I non-singular?Mathematics — NUST Mock By Dogers 3 — Question 57 of 200A. ab ≠ 0B. ab ≠ 1C. ab ≠ 2D. ab ≠ 4Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →