Valencian PAU Mathematics II Practice Questions - Valencian Community PAU Mathematics II Examination - Universitats GVA (Matemáticas II 2026) Exam

For which values of the real parameter 'a' does the matrix A = [[a, 1, 0], [1, a, 1], [0, 1, a]] fail to be invertible?

a = 0, a = sqrt(2), a = -sqrt(2) a = 0, a = 1, a = -1 a = 1, a = 2, a = -2 a = 0, a = 2, a = -2

Correct Answer:

a = 0, a = sqrt(2), a = -sqrt(2)

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