Let $T : P_2(x) \to P_2(x)$ be a linear transformation on vector space $P_2(x)$ (polynomials of degree $\le 2$ over $\mathbb{R}$) such that
$T(f(x)) = \dfrac{d}{dx}(f(x))$.
Then the matrix of $T$ w.r.t. basis ${1, x, x^2}$ is:
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