Matemática, perguntado por juniormaia38, 10 meses atrás

Determine a matriz inversa de B=[2 3 1 0]

Soluções para a tarefa

Respondido por CyberKirito
27

Teorema da matriz inversa

\boxed{\boxed{\mathsf{{A}^{-1}=\dfrac{1}{det\,A}.Adj\,A}}}

 \large \: A = \mathsf{\begin{bmatrix}2&3\\1&0\end{bmatrix}}

\large\mathsf{det\,A=2.0-3.1=-3}

\large\mathsf{cof\,A = \begin{bmatrix}0&-1\\-3&2\end{bmatrix}}

\large\mathsf{Adj\,A={cof\,A}^{T}=\begin{bmatrix}0&-3\\-1&2\end{bmatrix}}

\large\mathsf{{A}^{-1}=-\dfrac{1}{3}.\begin{bmatrix}0&-3\\-1&2\end{bmatrix}} \\ =  \large\mathsf{\begin{bmatrix}0&1\\\dfrac{1}{3}&-\dfrac{2}{3}\end{bmatrix}}

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