L lldk New member Joined Mar 1, 2020 Messages 35 Mar 23, 2022 #1 How to solve part b)? I have tried to use part a), but it seems does not work. For example, (A+I)^-1=(A-(-I))^-1=A^-1 + A^-1[(-I)^(-1)-A^-1]A^-1
How to solve part b)? I have tried to use part a), but it seems does not work. For example, (A+I)^-1=(A-(-I))^-1=A^-1 + A^-1[(-I)^(-1)-A^-1]A^-1
blamocur Elite Member Joined Oct 30, 2021 Messages 3,223 Mar 23, 2022 #2 Try multiplying the expression in question by [imath]A^{-1}[/imath].
L lldk New member Joined Mar 1, 2020 Messages 35 Mar 23, 2022 #3 blamocur said: Try multiplying the expression in question by [imath]A^{-1}[/imath]. Click to expand... you mean multiply A^-1 to the expression in a)?
blamocur said: Try multiplying the expression in question by [imath]A^{-1}[/imath]. Click to expand... you mean multiply A^-1 to the expression in a)?
blamocur Elite Member Joined Oct 30, 2021 Messages 3,223 Mar 23, 2022 #4 lldk said: you mean multiply A^-1 to the expression in a)? Click to expand... I mean the last expression in b).
lldk said: you mean multiply A^-1 to the expression in a)? Click to expand... I mean the last expression in b).
L lldk New member Joined Mar 1, 2020 Messages 35 Mar 24, 2022 #5 blamocur said: I mean the last expression in b). Click to expand... Got it! Thx!!!
