2. Let v be a vector in $\mathbb{R}^n$ and define a function $T_v: \mathbb{R}^n \to \mathbb{R}$ by $T_v(x) = x \cdot v$. (a) Show that $T_v$ is a linear transformation. (b) Find the standard matrix for $T_v$, where $v = (1, 1, 1)$.
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Additivity: Let x, y be vectors in Rn. Then Ty(x + y) = (x + y)v = xv + yv = Ty(x) + Ty(y). Show more…
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