Let V = CR ([-1,1]) denote the vector space of continuous real-value the interval [-1, 1] with inner product defined as (f,g) = [ f(x)g(x)dx. subspace V₁ = Span{ 2, sin(Ta), cos(xx),...,‚ sin(nær), cos(nxx)}. D = L(V₂) by Df = f'. Show that D* = -D. Conclude that D but not self-adioint

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