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OpenStudy (anonymous):
Assume that A is invertible, show that (I + A)^-1 = I - (A^-1 + I)^-1
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OpenStudy (amistre64):
since A is invertible, cant we work with AA' = I and A'A = I ?
OpenStudy (amistre64):
also, (AB)' = B'A'
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