Let Y R([a, b]) be the set (actually a vector space) of bounded, real-valued, Riemann integrable functions on the closed and bounded interval [a, b], and let X = C([a, b]), be the subset (actually a vector subspace) of continuous, real-valued functions on [a, b]. For f, g € Y, define d(f,g) sup f(x) = g(x)\. RElab = Show that the function dxxx X x X has the following proper- ties: for all f, g, h EX, i. d(f,g) ≥ 0 and d(f, g) = 0 if and only if f = g (i.e. if and only if f(x) = g(x) for all x € [a, b].); ii. d(f, g) = d(g, f); iii. d(f,g) ≤d(f, h) + d(h, g).
Let Y R([a, b]) be the set (actually a vector space) of bounded, real-valued, Riemann integrable functions on the closed and bounded interval [a, b], and let X = C([a, b]), be the subset (actually a vector subspace) of continuous, real-valued functions on [a, b]. For f, g € Y, define d(f,g) sup f(x) = g(x)\. RElab = Show that the function dxxx X x X has the following proper- ties: for all f, g, h EX, i. d(f,g) ≥ 0 and d(f, g) = 0 if and only if f = g (i.e. if and only if f(x) = g(x) for all x € [a, b].); ii. d(f, g) = d(g, f); iii. d(f,g) ≤d(f, h) + d(h, g).
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.4: Linear Transformations
Problem 34EQ
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