Question 4* (Similar to 18.1) Suppose f is a continuous function on a closed interval [a,...
4. The function f is continuous on the closed interval (-2, 1). Some values of f are shown in the table below. --2 f(x) -3 -1 0 1 7 k3 The equation f(x) = 3 must have at least two solutions in the interval [-1,1) if k = a. 1 b. C. 2 CONN NICO d. 5. If k(r) is a continuous function over the interval (-2, 4) such that k(-2) = 3 and k(4) = 1, then k(2) 0...
Let R be an interval (open, closed, neither are all fine) and let f: I-> R be a continuous strictly increasing function. Do the following: (1) Show that the inverse function f -1 exists. (2) Prove that f is an open map (in the relative topology on I) (3) Prove that f1 is continuous Let R be an interval (open, closed, neither are all fine) and let f: I-> R be a continuous strictly increasing function. Do the following: (1)...
(a) Suppose f is continuously differentiable on the closed and bounded interval I = [0, 1]. Show that f is uniformly continuous on I. (b) Suppose g is continuously differentiable on the open interval J = (0,1). Give and example of such a function which is NOT uniformly continuous on J, and prove your answer.
23. Let be a function defined and continuous on the closed interval (a,b). If f has a relative maximum at cand a<c<b, which of the following statements must be true? 1. f'(c) exists. II. If f'(c) exists, then f'(c)= 0. III. If f'(c) exists, then f"(c)<0. (A) II only (B) III only (C) I and II only (D) I and III only (E) II and III only
4. True or False. Write true or false in the blanks. a, A continuous function over a closed interval will achieve exactly one local maximum on that interval ______________ b. If f(x) and g(x) both have a local maximum at x=a then has either a local maximum or a local minimum at x=a. ___________ c. If for all x and if a > b, then _____________ d. If is undefined, and if is continuous at x=c, then has a local...
5. The inverse of a continuous invertible function in general is not continuous. But having a compact domain changes this: Suppose that K, A C R are sets and f: K + A is a continuous function with range A, that is, f(K) = A. Suppose also that K is compact and is invertible. Prove that the inverse function f-1: A + K is also continuous. Suggestion: Verify the sequential criterion for continuity. You may want to use the fact,...
4 -2 2. The function f is defined on the closed interval [-4,9]. The graph of f consists of a semicircle, a quarter circle, and three linear segments, as shown in the figure above. Let g be the function defined by g(x) = 3x + f(t) dt. (a) Find g(8) and g'(8). (b) Find the value of x in the closed interval (-4,9] at which g attains its maximum value. Justify your answer. (c) Find lim f'(x), or state that...
please explain in detail 4 -11 23 4 Graph of f Let f be a continuous function defined on the closed interval -1Sxs4. The graph of f, consisting of three line segments, is shown above. Let g be the function defined by g(x) = 5 +1.f(t) dt for-1 $154. (A) Find g(4). (B) On what intervals is gincreasing? Justify your answer. (C) On the closed interval 1 s xs 4, find the absolute minimum value of g and find the...
Could someone please help me prove this? I am uncertain on how to prove f has at least one maximum or minimum on an interval that is not closed and/or bounded. Supposefis continuous on 0, oo) and lim f(x) [0, 00) L exists. Prove that f attains at least one of its maximum or minimum value on
Can you help with this? Thank you always. Suppose that the function f : R-+ R is continuous at the point xo and that f(xo) > 0. Prove that there is an interval 1 (x,-1/n, xo + 1 /n), where n is a natural number, such that f (x) >0 for all x in I. (Hint: Argue by contradiction.) Suppose that the function f : R-+ R is continuous at the point xo and that f(xo) > 0. Prove that...