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If A = [(0,-tan""(theta)/(2)),(tan""(the...

If A = `[(0,-tan""(theta)/(2)),(tan""(theta)/(2),0)]` and I is the `2xx2` unit matrix, find `(I+A)(I-A)^(-1)`.

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Verified by Experts

The correct Answer is:
`(AB)^(-1) = B^(-1) A^(-1)` (Proved).
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