The operator of differentiation on $P_m(\mathbb{R})$ is nilpotent because the $(m+1)^{st}$ derivative of every polynomial of degree at most $m$ equals $0$. Note that on this space of dimension $m+1$, we need to raise the nilpotent operator to the power $m+1$ to get the $0$ operator.
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Step 1: Consider the space Pm(R) which consists of all polynomials of degree at most m. Show more…
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