If A and B are invertible matrices of the same order, then which of the following statement is not true ? |
$|A^{-1}|=|A|^{-1}$ $|A|A^{-1}=AdjA$ $(A+B)^{-1}=B^{-1}+A^{-1}$ $(AB)^{-1}=B^{-1}A^{-1}$ |
$(A+B)^{-1}=B^{-1}+A^{-1}$ |
$\text{Given }A,B \text{ are invertible matrices.}$ $|A^{-1}|=|A|^{-1}\;\text{True}.$ $|A|A^{-1}=\text{Adj }A\;\text{True}.$ $(AB)^{-1}=B^{-1}A^{-1}\;\text{True}.$ $(A+B)^{-1}=A^{-1}+B^{-1}\;\text{Not true in general}.$ $\text{Not true statement is }(A+B)^{-1}=B^{-1}+A^{-1}.$ |