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+Risa 3. Write down a careful proof of the following. Theorem. Let (a,b) be a possibly...
#23 22, Use the definition of limit to prove Theorem 3.5. 23. Use Theorem 3.5 to...
#23
22, Use the definition of limit to prove Theorem 3.5. 23. Use Theorem 3.5 to prove that lim x? cost(1/x)-0. In addition, give a proof of th result without using Theorem 3.5. THEOREM 3.5 Squeeze Theorem for Functions Let I be an open interval that contains the point c and suppose that f, g, except possibly at the point c. Suppose that g(x) s f(a) s h(x) for all x in I If limn g(x)-L = lim h (x),...
10. Use the Fundamental Theorem of Calculus to provide a proof of Theorem 8.4 under the additiona...
10. Use the Fundamental Theorem of Calculus to provide a proof of Theorem 8.4 under the additional assumption that each fis continuous on I la, b).(Hint: For x in la, b.o)If f g uniformly on [a, b], then Theorem 8.3 implies that im f.(x) f (x8. It follows that frpuintwise on la, b), where F(x) -lim frCro) + .By Theorem 6.12, F()-x) on la,b). Now show that f uniformly on la, b].] F heorem 8.4 Suppose that neN is a...
(Proof of the Squeeze Theorem for Functional Limits). Let f.g, h: A R be three functions...
(Proof of the Squeeze Theorem for Functional Limits). Let f.g, h: A R be three functions satisfying f(x) < 9(2) < h(r) for all re A, and suppose c is a limit point of A and lim; cf(x) = L and lim -ch() = L. Prove that lim.+c9(x) = L as well.
2 Precise Definition of a Limit Let fbe a function deined on some open interval that contains the number a, except poss...
2 Precise Definition of a Limit Let fbe a function deined on some open interval that contains the number a, except possibly at a itself. Then we say that the limit of fla) as r approaches a is L, and we write lim f)-L (x) = if for every number ε > 0 there is a number δ > 0 such that 0<lx-a |<δ If(x)-L| < ε if then For the limit 2x tii illustrate Definition 2 by finding values...
Proof Theorem 65.6 (a generalization of Dini's theorem) Let {fn be a sequence of real-valued continuous...
Proof
Theorem 65.6 (a generalization of Dini's theorem) Let {fn be a sequence of real-valued continuous functions on a compact subset S of R such that (1) for each x € S, the sequenсe {fn(x)}o is bounded and топotone, and (ii) the function x lim,0 fn(x) is continuous on S Then f Remark that the result is not always true without the monotonicity of item (i) Šn=0 lim fn uniformly on S
Theorem 65.6 (a generalization of Dini's theorem) Let...
hint This exercise 5 to use the definition of Riemann integral F. Let f : [a,...
hint
This exercise 5 to use the definition of Riemann integral
F. Let f : [a, b] → R be a bounded function. Suppose there exist a sequence of partitions {Pk} of [a, b] such that lim (U(Pk, f) – L (Pk,f)) = 0. k20 Show that f is Riemann integrable and that Så f = lim (U(P«, f)) = lim (L (Pk,f)). k- k0 1,0 < x <1 - Suppose f : [-1, 1] → R is defined as...
4. Let {S.} be a sequence of differentiable real-valued functions on (a, b) that converges pointwise...
4. Let {S.} be a sequence of differentiable real-valued functions on (a, b) that converges pointwise to a function f on (a, b). Suppose the sequence {f) converges uniformly on every compact subset of (a, b). Prove thatf is differen- tiable on (a, b) and that f'(x) = lim f(x) for all x E (a, b).
4. Let {S.} be a sequence of differentiable real-valued functions on (a, b) that converges pointwise to a function f on (a, b). Suppose...
4. (a) Write down, without proof, all parts of the Perron-Frobenius Theorem (b) Let S be a stochastic matrix. Prove that 1 is the Perron eigenvalue of S, and e (1 Furthermore, prove that A-1 for ever...
4. (a) Write down, without proof, all parts of the Perron-Frobenius Theorem (b) Let S be a stochastic matrix. Prove that 1 is the Perron eigenvalue of S, and e (1 Furthermore, prove that A-1 for every eigenvalue λ of S 1) is the corresponding Perron eigenvector of S (c) For each of the given matrices S(a) below determine the values of the parameter di for which the limit link oo (Si exists. Justify your answer! 1 1 2 2...
Theorem 10.1.15 (Chain rule). Let X, Y be subsets of R, let xo e X be...
Theorem 10.1.15 (Chain rule). Let X, Y be subsets of R, let xo e X be a limit point of X, and let yo e Y be a limit point of Y. Let f : X+Y be a function such that f(xo) = yo, and such that f is differentiable at Xo. Suppose that g:Y + R is a function which is differentiable at yo. Then the function gof:X + R is differentiable at xo, and .. (gºf)'(xo) = g'(yo)...
Hint: Use the fundamental theorem of arithmetic. 15. Theorem 14.5 implies that Nx N is countably infinite. Construct an alternate proof of this fact by showing that the function ф : N x N 2n-1(...
Hint: Use the fundamental theorem of arithmetic.
15. Theorem 14.5 implies that Nx N is countably infinite. Construct an alternate proof of this fact by showing that the function ф : N x N 2n-1(2m-1) is bijective. N defined as ф(m,n) It is also true that the Cartesian product of two countably infinite sets is itself countably infinite, as our next theorem states. Theorem 14.5 If A and B are both countably infinite, then so is A x B. Proof....
#23
22, Use the definition of limit to prove Theorem 3.5. 23. Use Theorem 3.5 to prove that lim x? cost(1/x)-0. In addition, give a proof of th result without using Theorem 3.5. THEOREM 3.5 Squeeze Theorem for Functions Let I be an open interval that contains the point c and suppose that f, g, except possibly at the point c. Suppose that g(x) s f(a) s h(x) for all x in I If limn g(x)-L = lim h (x),...
10. Use the Fundamental Theorem of Calculus to provide a proof of Theorem 8.4 under the additional assumption that each fis continuous on I la, b).(Hint: For x in la, b.o)If f g uniformly on [a, b], then Theorem 8.3 implies that im f.(x) f (x8. It follows that frpuintwise on la, b), where F(x) -lim frCro) + .By Theorem 6.12, F()-x) on la,b). Now show that f uniformly on la, b].] F heorem 8.4 Suppose that neN is a...
(Proof of the Squeeze Theorem for Functional Limits). Let f.g, h: A R be three functions satisfying f(x) < 9(2) < h(r) for all re A, and suppose c is a limit point of A and lim; cf(x) = L and lim -ch() = L. Prove that lim.+c9(x) = L as well.
2 Precise Definition of a Limit Let fbe a function deined on some open interval that contains the number a, except possibly at a itself. Then we say that the limit of fla) as r approaches a is L, and we write lim f)-L (x) = if for every number ε > 0 there is a number δ > 0 such that 0<lx-a |<δ If(x)-L| < ε if then For the limit 2x tii illustrate Definition 2 by finding values...
Proof
Theorem 65.6 (a generalization of Dini's theorem) Let {fn be a sequence of real-valued continuous functions on a compact subset S of R such that (1) for each x € S, the sequenсe {fn(x)}o is bounded and топotone, and (ii) the function x lim,0 fn(x) is continuous on S Then f Remark that the result is not always true without the monotonicity of item (i) Šn=0 lim fn uniformly on S
Theorem 65.6 (a generalization of Dini's theorem) Let...
hint
This exercise 5 to use the definition of Riemann integral
F. Let f : [a, b] → R be a bounded function. Suppose there exist a sequence of partitions {Pk} of [a, b] such that lim (U(Pk, f) – L (Pk,f)) = 0. k20 Show that f is Riemann integrable and that Så f = lim (U(P«, f)) = lim (L (Pk,f)). k- k0 1,0 < x <1 - Suppose f : [-1, 1] → R is defined as...
4. Let {S.} be a sequence of differentiable real-valued functions on (a, b) that converges pointwise to a function f on (a, b). Suppose the sequence {f) converges uniformly on every compact subset of (a, b). Prove thatf is differen- tiable on (a, b) and that f'(x) = lim f(x) for all x E (a, b).
4. Let {S.} be a sequence of differentiable real-valued functions on (a, b) that converges pointwise to a function f on (a, b). Suppose...
4. (a) Write down, without proof, all parts of the Perron-Frobenius Theorem (b) Let S be a stochastic matrix. Prove that 1 is the Perron eigenvalue of S, and e (1 Furthermore, prove that A-1 for every eigenvalue λ of S 1) is the corresponding Perron eigenvector of S (c) For each of the given matrices S(a) below determine the values of the parameter di for which the limit link oo (Si exists. Justify your answer! 1 1 2 2...
Theorem 10.1.15 (Chain rule). Let X, Y be subsets of R, let xo e X be a limit point of X, and let yo e Y be a limit point of Y. Let f : X+Y be a function such that f(xo) = yo, and such that f is differentiable at Xo. Suppose that g:Y + R is a function which is differentiable at yo. Then the function gof:X + R is differentiable at xo, and .. (gºf)'(xo) = g'(yo)...
Hint: Use the fundamental theorem of arithmetic.
15. Theorem 14.5 implies that Nx N is countably infinite. Construct an alternate proof of this fact by showing that the function ф : N x N 2n-1(2m-1) is bijective. N defined as ф(m,n) It is also true that the Cartesian product of two countably infinite sets is itself countably infinite, as our next theorem states. Theorem 14.5 If A and B are both countably infinite, then so is A x B. Proof....
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