Ruiz Rodriguez
04/23/2023 · High School
32) Seja \( T: \mathbb{R}^{3} \longrightarrow \mathbb{R}^{2} \) tal que \( [T]_{B_{2}}^{B_{1}}=\left[\begin{array}{ccc}1 & 0 & -1 \\ -1 & & 1 \\ & 1\end{array}\right] \) sendo \( B_{1}=\{(0,1,1),(1,0,0),(1,0,1)\} \) e \( B_{2}=\{(-1,0),(0,-1)\} \) bases do \( \mathbb{R}^{3} \) e \( \mathbb{R}^{2} \), respectivamente. a) Encontrar a expressão de \( T(x, y, z) \). b) Determinar \( \operatorname{Im}(T) \) e uma base para esse subespaço.
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a) A expressão de \( T(x, y, z) \) é \( T(x, y, z) = (x - y, -x + y + z) \).
b) A imagem de \( T \) é gerada pelos vetores \( (1, -1) \) e \( (0, 1) \), e uma base para \( \operatorname{Im}(T) \) é \( \{(1, -1), (0, 1)\} \).
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