Rešiti kakršne koli težave z matematiko

Enačbe, izvedene, sestavne dele, matrice, trikotniki, prvotne, statistične podatke ali besedni problem, ki ga tutor razdeli na dele.

Linear-Algebra · Matrix-Inverse

Inverse of [[2,1],[1,1]]

\left[\begin{matrix}2 & 1\\1 & 1\end{matrix}\right]

Korak po koraku

  1. \det A = 1

    A matrix is invertible only when its determinant is non-zero.

  2. A^{-1} = \frac{1}{\det A}\begin{pmatrix} d & -b \\ -c & a \end{pmatrix} = \frac{1}{1}\left[\begin{matrix}1 & -1\\-1 & 2\end{matrix}\right]

    For 2×2: swap the diagonal, negate the off-diagonal, divide by the determinant.

  3. A^{-1} = \left[\begin{matrix}1 & -1\\-1 & 2\end{matrix}\right]

Odkrij odgovor
A^{-1} = \left[\begin{matrix}1 & -1\\-1 & 2\end{matrix}\right]