Let xT Ax be a quadratic form in the variables x1, x2,...,xn, and define T : Rn R by
Chapter 7, Problem 31(choose chapter or problem)
Let xT Ax be a quadratic form in the variables x1, x2,...,xn, and define T : Rn R by T(x) = xT Ax. (a) Show that T(x + y) = T(x) + 2xT Ay + T(y). (b) Show that T(cx) = c2T(x).
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