Prove the following version of Darboux's Theorem: let f be differentiable in (a, b). Suppose that the two limits f'(a+) = lim f'(x), f'(b-) = lim f'(æ) T>a+ both exist and are finite. Show that 1....


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Prove the following version of Darboux's Theorem: let f be differentiable in (a, b). Suppose that the two limits<br>f'(a+) = lim f'(x),<br>f'(b-) = lim f'(æ)<br>T>a+<br>both exist and are finite. Show that<br>1. (Existence of continuous extension) There is a function g(x) E C[a, b] such that g(x) = f(x) for all<br>x E (a, b).<br>2. If f'(a+) > m > f'(b–), then there exists c E (a, b) such that f'(c) = m.<br>

Extracted text: Prove the following version of Darboux's Theorem: let f be differentiable in (a, b). Suppose that the two limits f'(a+) = lim f'(x), f'(b-) = lim f'(æ) T>a+ both exist and are finite. Show that 1. (Existence of continuous extension) There is a function g(x) E C[a, b] such that g(x) = f(x) for all x E (a, b). 2. If f'(a+) > m > f'(b–), then there exists c E (a, b) such that f'(c) = m.

Jun 04, 2022
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