Question

If A = (aij)nxn and fis a function, we
definef (A) = (f (a;;))nxn. Let
e
A
Then
-0.
7/2 - 0
(172
o).
1/2 - 0
(A) sin A is invertible
(B) sin A = cos A
(C) sin A is orthogonal
(D) sin (2A) = 2 sin A cos A​

Answer 1

Answer:

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