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Past exam of the mathematics course of the University of Cambridge / 2023 / ib / Paper 1 / 8F / d

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2023 ib Paper 1 8F
Created 2026-09-23 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
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d
False. The real matrix
A=(01​−10​)
(1)
has the two distinct complex eigenvalues i and −i, so it is diagonalizable over C. It has no real eigenvalue and hence no real eigenbasis, so it is not diagonalizable over R.

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