Where Let n(t) be a fixed strictly positive continuous function on (a, b). define H, =...
12. (True/False) (a) Let AE Rm*n . Then R(A) (b) Let AERm*n. Then N(A) is isomorphic to N(AT) (c) We define < A. B > = Tr (BTA ) where A, B E Rnxn . is isomorphic to R(A Then 〈 . , . 〉 is an inner product on Rmxn. (d) Consider a periodic-function space V with period of 1 sec. Define an inner product on V by <f,a>= f(t )a (t ) dt. Then cos 2 π t...
Both part of the question is True or False. Thank you Problem 1. (ref. Example 3 in the slide) Let X = Y = C[0, 1] (with the norm || ||C[0,1] = sup |u(x)]). For any u € C[0, 1], define T€[0,1] v(t) = u(s)ds. We denote by T the mapping from u to v with D(T) = C[0, 1], i.e., v(t) = Tu(t). Then, the following conditions are true or not? Example 3. We denote by the set of...
Let f,g be continuous functions on [a,b] with for all (a) show that there are such that (b) using (a) prove that there is a strictly between x1 and x2 such that f(x) 0 rE a, b a, 1 ( f(xgf(x) < g[x2}f{x)) We were unable to transcribe this imagef(r)g()da g(e) f(x)da f(x) 0 rE a, b a, 1 ( f(xgf(x)
5. Let f,g:R + R be continuous 27-periodic functions. Define h: R + R by 271 h(s) = 5" (3 – t)g(t) dt. Prove that 27 /** h(s) ds (* sc) d) ($* $11) t). 6. Let f : R2 + R be a C2 function. Use Fubini's theorem to show that д?f д?f дхду дудх
Assume that is an increasing function in [a, b]. Given , continuous at . We define the function: Prove that and that α xo e [a, b] We were unable to transcribe this imageΧο (1, f(x) = x = xo x + Xo feR(a) b sof da = 0.
B2. (a) Let I denote the interval 0,1 and let C denote the space of continuous functions I-R. Define dsup(f,g)-sup |f(t)-g(t) and di(f.g)f (t)- g(t)ldt (f,g E C) tEI (i) Prove that dsup is a metric on C (ii) Prove that di is a metric on C. (You may use any standard properties of continuous functions and integrals, provided you make your reasoning clear.) 6 i) Let 1 denote the constant function on I with value 1. Give an explicit...
b) 16 marks Assume that each set Vi, j = 1, 2, ...k, is a compact set in a metric space X. Prove that the (finite union) set V = V1 U V2 U... U Vk is a compact set. c) [7 marks] Let H be a Hilbert space with inner product < x, y > and the induced norm ||2|= << x, x >. (i) Show that ||* + y|l2 + ||* – y|l2 = 2(1|x1|2 + ||4||2) for...
Let H be a complex Hilbert space. 6. (a) Let φ, ψ E H \ {0} . Define the linear operator T on H by Using the Cauchy-Schwarz inequality, show that llll = Hell ll [4 marks] (b) A bounded linear operator A is said to have rank one if there exists v e H [0 such that for any u E H we have Au cu, where cu E C is a constant depending on u. (i) Show that...
Problem 4. For r E [0, 1, fnd F)-(t)dt, where fr) 3 2r. Verify that F is continuous on [0,1] and F"(z) =f(z) at all points where f is continuous. Problern 5. Suppose that g, h : [c, d] → [a,b] are differentiable. ForエE [c,d] define h(a) Find H'(r) Problem 4. For r E [0, 1, fnd F)-(t)dt, where fr) 3 2r. Verify that F is continuous on [0,1] and F"(z) =f(z) at all points where f is continuous. Problern...