Madrid PAU Mathematics II Practice Questions - Madrid PAU Mathematics II Exam - Matemáticas II 2o Bachillerato Comunidad De Madrid 2026 Exam

Which condition is both necessary and sufficient for a square matrix A to be invertible?

det(A) != 0 det(A) = 0 A is a symmetric matrix The trace of A is positive

Correct Answer:

det(A) != 0

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