7. Suppose that f: R → R is continuous at c and that f(c) < 0. Prove that there exists some > 0 such that f(x) < 0 in the d-neighborhood of c.
7. Suppose that f: R → R is continuous at c and that f(c) < 0. Prove that there exists some > 0 such that f(x) < 0 in the d-neighborhood of c.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.2: Ring Homomorphisms
Problem 6E
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