Answer:
Step-by-step explanation:
Given that A is a square matrix and A is idempotent
Consider I-A
i)
It follows that I-A is also idempotent
ii) Consider the matrix 2A-I
So it follows that 2A-I matrix is its own inverse.
There is no picture though :/
Tag me as Brilliant
Herevis your answer.
A,C and E
because Im the only one thats answered your question so you don't exactly have anything else to go off of