Latest exam Aptitude Question SOLUTION: A square matrix A is idempotent if A^2 = A. a) Show that if A is idempotent, then so is I - A. b) Show that if A is idempotent, then 2A - I is invertible and is its own inve

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(#M40079280) EXAM Numerical Ability question Keep an EYE

A square matrix A is idempotent if A^2 = A.


a) Show that if A is idempotent, then so is I - A.


b) Show that if A is idempotent, then 2A - I is invertible and is its own inverse.

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