2. Determine if a function f : [0, 2m] →R defined by f(r) = sin 2x is continuous. %3!

College Algebra (MindTap Course List)
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Author:R. David Gustafson, Jeff Hughes
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Chapter3: Functions
Section3.3: More On Functions; Piecewise-defined Functions
Problem 99E: Determine if the statemment is true or false. If the statement is false, then correct it and make it...
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Please do no 2 for me using the definition of the metrics spaces

2. Determine if a function f : [0, 2] → R defined by f(x) = sin 2z is continuous.
3. Find the fixed point(s) of ƒ : [1, x) → [2, ∞0) defined by f(x) = vr² + x.
4. State whether each of the following statements is true or false, in either case substan-
tiate/ justify.
(a) If a function f :X →Y is continuous, one-to-one and surjective between metric
spaces, then f- is continuous.
(b) Let f : AC X → Y be a continuous function between metric spaces. If A is
open then so is f(A).
(c) Let f : X → Y be a function such that f-1 :Y → X is a closed function, where
a closed function mans closed sets into closed sets Then fis continuous 10.
Transcribed Image Text:2. Determine if a function f : [0, 2] → R defined by f(x) = sin 2z is continuous. 3. Find the fixed point(s) of ƒ : [1, x) → [2, ∞0) defined by f(x) = vr² + x. 4. State whether each of the following statements is true or false, in either case substan- tiate/ justify. (a) If a function f :X →Y is continuous, one-to-one and surjective between metric spaces, then f- is continuous. (b) Let f : AC X → Y be a continuous function between metric spaces. If A is open then so is f(A). (c) Let f : X → Y be a function such that f-1 :Y → X is a closed function, where a closed function mans closed sets into closed sets Then fis continuous 10.
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