no, this is not homework
Just feeling retarded because I'm failing this simple algebra problem:
X(A+I)=I+A^-1, solve for X (they're all compatible matrices and I is the identity)
Now, I can see that the solution is A^-1, but if I try to solve by multiplying (A+I)^-1, this happens:
X=(I+A^-1)(A+I)^-1 <---edit:this was wrong
X=(I+A^-1)(I+A^-1)
X=(I+A^-1)^2 = I+2A^-1+A^-2
what am I doing wrong nerds pls help