Let f: R → R be the function f(x) = 1². Provide an example of an open interval I such that f(1) is an open interval. Provide an example of an open interval J such that f-¹(J) is an open interval.

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I was thinking cosx and f(cosx), but I cannot really proove it. Please explain the correct answers please. Thank you!

Let f: R → R be the function f(x) = r². Provide an example of an open interval I such that f(I) is an
open interval. Provide an example of an open interval J such that f-1(J) is an open interval.
Transcribed Image Text:Let f: R → R be the function f(x) = r². Provide an example of an open interval I such that f(I) is an open interval. Provide an example of an open interval J such that f-1(J) is an open interval.
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