UPSEE 2019 Solved Paper

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Question : 107 of 150

Marks: +1, -0

Let x be an n×1 matrix. Let O and I be the zero, and identity matrices of order n, respectively. Define P=−

xxT

xTx

is the transpose of x.
Then, which of the following options is always correct?

P2−P=O
P2−P=I
P2+P=O
P2+P=I

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