Geometria Analítica e Álgebra Linear – GAAL
\[ \begin{align*} {\color{blue}a}x^2+{\color{blue}b}y^2+{\color{blue}c}xy&= \begin{bmatrix} x & y \end{bmatrix} {\color{blue} \begin{bmatrix} a & c/2\\ c/2 & b\end{bmatrix} } \begin{bmatrix} x \\ y \end{bmatrix}\\ &=X^t {\color{blue}A} X, \quad \bar{X}=Q^tX \\ & =\bar{X}^t{\color{red}D}\bar{X}\\ &= \begin{bmatrix} x & y \end{bmatrix} {\color{red} \begin{bmatrix} \lambda_1 & 0\\ 0 & \lambda_2\end{bmatrix} }\\ & = {\color{red}\lambda_1}\bar{x}^2+{\color{red}\lambda_2}\bar{y}^2. \end{align*} \]
Material Básico
Material Complementar
🚧 Em construção…
:::