Stewart Schneider
06/13/2024 · Senior High School

2.- Sea la Transformación lineal \( T: R^{3} \longrightarrow R^{3} \), y los vectores: \( \overrightarrow{\boldsymbol{u}}_{1}=(\mathbf{1}, \mathbf{0}, \mathbf{0}), \overrightarrow{\boldsymbol{u}}_{\mathbf{2}}=(\mathbf{0}, \boldsymbol{a}+\mathbf{1}, \mathbf{0}) \) \( \overrightarrow{\boldsymbol{u}}_{3}=(\mathbf{0},-\mathbf{1}, \boldsymbol{a}+\mathbf{2}) \) tal que: \[ \boldsymbol{T}\left(\overrightarrow{\boldsymbol{u}}_{\mathbf{1}}\right)=(-\mathbf{1}, \mathbf{0}, \mathbf{2}), \boldsymbol{T}\left(\overrightarrow{\boldsymbol{u}}_{2}\right)=(\mathbf{1}+\boldsymbol{a}, \mathbf{0}, \mathbf{0}) \boldsymbol{y} \boldsymbol{T}\left(\overrightarrow{\boldsymbol{u}}_{3}\right)=(\mathbf{0}, \mathbf{0}, \mathbf{2}) \] a) Verificar que se cumplen las condiciones para la existencia de una única T.L. y encontrar la expresión de la TL. b) Hallar el núcleo, una base y su dimensión. c) Encontrar la imagen, una base y la dimensión. d) Verificar el teorema de la dimensión del núcleo y la imagen. Justificar. e) Clasificar la transformada. Decir si existe \( \mathrm{T}^{-1} \). Justificar.

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a) Verificar que los vectores \( \overrightarrow{\boldsymbol{u}}_{1}, \overrightarrow{\boldsymbol{u}}_{2}, \overrightarrow{\boldsymbol{u}}_{3} \) son linealmente independientes y encontrar la expresión de la T.L. \( T(x, y, z) = (-x+y+a, 0, 2x+2z) \). b) Hallar el núcleo, una base y su dimensión. El núcleo \( \text{Ker}(T) = \{ (-z, -z-a, z) \mid z \in R \} \), base \( \{ \overrightarrow{u}_3 \} \), dimensión 1. c) Encontrar la imagen, una base y la dimensión. La imagen \( \text{Im}(T) \) es el conjunto de todos los vectores en \( R^3 \) obtenidos como \( T(\overrightarrow{u}) \).

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