Define f : R → R by f(x) = 0 if x∈ R\Q f(x)=1/q if x=p/q with (p, q) = 1. Prove that f is continuous on R \ Q and discontinuous on Q.

Q: If f(t) is a continuous function on the interval a, b), then the integral | f(t) dt is defined to be…

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Q: Define f(x) = x if x is rational and f(x) = 0 if x is irrational. Compute So f dx and ſ f dx. Is f…

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Q: Suppose that the function f:(a, b) → R is uniformly continuous. Prove that f: (a, b) → Ris bounded.

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Q: 2. Recall that we proved f(r) = VI is continuous on its domain [0, 00). Explain why f(r) is…

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Q: Let f : R → R be the function defined as if x 1. Use Theorem 32.5 to prove that f is Darboux…

A: A function is Darboux integrable if for all ε>0, there exists a partition P of [0,2] such that…

Q: Define f : Rm \ {0} → R by ƒ(x) = T: Prove that f is uniformly continuous on R" \ B1(0), but not…

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Q: Define f : R2 → R by letting (y² – x)² (y4 + x²) f(x, y) = if (x, y) # (0, 0), and f(0,0) = 1. ||…

A: The given function is f:ℝ2→ℝ defined as: fx,y=y2-x2y4+x2if x,y≠0,01if x,y=0,0 Claim: The given…

Q: Suppose that F(x, y, z) = 0 defines z as a function of x and y and F is differentiable. Prove that…

A: Solution is given below:

Q: Let BCR be the open ball of radius one centered at the origin, i.e. B = {(x₁,...,xn) € R" : x² + +…

A: As per the question we are given a n dimentional open ball B of radius 1 centered at the origin. And…

Q: 24. Show that f(x) = mx + b, where m,b e R, is uniformly continuous on R. %3D

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Q: Suppose that p is continuous on (a, c] and differentiable on (a, c), while q is continuous on [c, b)…

A: Consider the provided question, p is continuous on (a, c] and differentiable on (a, c), while q is…

Q: If f(x) is uniformly continuous on R, then f is bounded on R. True False

A: To say True or False

Q: f is not integrable on [0, 1].

A: It is given that f:[0, 1]→ℝ by f(x)=5x  if x∈ℚ0    if x∉ℚ We know, if lower integral and upper…

Q: use the formal definition of limit to prove that thefunction is continuous at c.

A: Given: hx=2x-3 To Find: To prove that the given function is continuous at c=2

Q: Let h: R → R be a continuous function on all of R. If h(x) T, prove that h(T)<0.

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Q: Let f : R → R be a function such that |f (x) – f(y)| 0. Write the e-d definition of continuous…

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Q: Let h: R → R be a continuous function on all of R. If h(x) T, prove that h(Tt) <0.

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Q: If f(z) is continuous at z, then it must be differenttiable at z, ylgn O İhi O

A: If a function f(z) is continuous at z0 , then it may or may not be differentiable at z0. Hence, The…

Q: Define f(0,0) in a way that extends f to be continuous at the origin. 2.2 11x - xy + 11y 2 f(x,y) =…

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Q: Let f be a continuous function with domain R. Compute the limit (z- t) f(t) lim dt.

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Q: Show by definition that f(x) = |x| : R → R is continuous on R. 2.

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Q: Define f : R → R by if a 1. Use the e-d characterization of continuity to show that f is continuous…

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Q: Prove that if f, g :R → R are continuous at x E R, then ƒ+gis continuous at x E R as well.

A: By using the definition of continuous function this above statement can be easily proved.

Q: Let h: R → R be a continuous function on all of R. If h(x) T , prove that h(T)<0.

A: Given that, let h:ℝ→ℝ be a continuous function on all of ℝ. Also given, hx≤0 for all x&gt;π.

Q: Let f:X→R be a Lipschitz continuous function defined on X. Show that f is uniformly continuous on X.

A: Given : function f:X -&gt; R is a Lipschitz continuous function defined on X . To show : f is…

Q: Consider the function F(x) = | s(t) dt , where a is a constant and f is continuous everywhere. By…

A: Find we have to use definition of derivative.

Q: If f satisfies a Lipschitz condition on ICR, then f is uniformly continuous on I. a.

A: Since you have sent more than one question, because of our guidelines we can just answer one of…

Q: Let f,(x) = x E R. Prove that f 0 uniformly on R. COs nr %3D

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Q: Let f be a function defined on R satisfying If(z) - f(y)| < 히 - J), V,yER. a. Show that f is a…

A: Given that f be a function defined on ℝ satisfying…

Q: Suppose f is Reimann integrable on [a,b]. If f (x)< 0 for all x E [a, b], then S f(x)dx

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Q: Let f: X → Y and g : Y Z be uniformly continuous on X and Y, Prove go f: X→ Z is uniformly…

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Q: Q2: If f(x) is Riemann-Stieltjes integrable function with respect to g(x) on [a,b] and if…

A: It is given that,  f(x) is Riemann-Stieltjes integrable function with respect to g(x) on a, b such…

Q: Use the definition to prove f =1 is uniformly continuous on [0, 0).

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Q: Suppose that ƒ is continuous and F(x) = g> 0, g'>0 and integrable on [a, b) and that lim g(x) = I-b-…

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Q: 2. If f is continuous on [0, 1] such that x* f(x) dx=0, for n=0, 1, 2, 3,.. then show that f(x)3D0…

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Q: 크) Prove that va +b 0. Prove that f is uniformly continuous on [0, 0).

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Q: Suppose f> 0 is integrable on [a, b], continuous at xo € [a, b], and f(xo) > 0. Prove that f>0.

A: Given f≥0 is integral on a,b continuous at x0∈a,b and fx0&gt;0

Q: Let F be defined on R x R to R by F(x, y) = x² – y. Show that F is C' on a neighborhood of (0, 0)…

A: Let F be defined on RXR→R by F(x,y) =x2-y. Now we have to show that F is in class C' on a…

Q: Define f: R → [2, 0) by f(x) = x² +2,Vx € R.Prove that f is onto.

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Q: Let h: R R be a continuous function on all of R. If h(x) Tt, prove that h(t)<0.

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Q: If fCxl is continuous on [2,7],then Si f(u) dvz f (7)-(2) True e or false?

A: we have given that f(x) is continuous on[2,7].

Q: Let A := (0, 1] and let ƒ : A → R be defined by f(x) = !. Prove that ƒ is continuous on A.

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Q: Suppose that f is integrable on [a,b], and that g(x) is defined for all x E[a,b] and ,exists and…

A: Given: To explain the given statement as follows, To prove that    exists and equals .

Q: Let f : [0,∞) → R. Assume that f is uniformly continuous on [0, 1] and on [1,∞). Show that it is…

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Q: Let f : (0, 1) → R given by f(x) = 1/x . (i) Prove that f is continuous. (ii) Prove that f is not…

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Q: Assume that J is continuous on [0, 3 and differentiable on (0, 3) with f (z) > 6 for each z in (0,…

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Q: Let f be the function Jo if x +1 and f(x) = 42 if x = 1. Prove that f is integrable on [0, 2] and…

A: Given :f is  a function such that               fx=0      if x≠1 and42    if x=1Now, on the interval…

Q: f(z) = Im z is continuous ylgn O ihi O

A: Use the property of continyity in C which is if real and imaginary part of functiom is continuous in…

Q: Q2: If f(x) is Riemann-Stieltjes integrable function with respect to g(x) on [a,b]and if…

A: detailed explanation mentioned below.

Q: Let f be the function defined by fx)=1+x, when 0<x<}, }<x<1 0, when x . Show that fis integrable…

A: We know that  A bounded function f which has only a finite number of points of discontinuity in…

Limits

When it comes to calculus, limits are considered to be a very important topic of discussion. The main importance of limit lies in expressing the value of a function as it gets closer to a certain value. Also, limits can help you to understand other topics, such as continuity and differentiability better. In a broader sense, every calculus notion is a limit. Other branches of calculus have also been derived from limits.