(b) xsgn x (c) sgn (x + 2)

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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I know this is very easy to you experts. Please help me amswer this problem. Really need your help. Thanks.

3. (a) Sketch the graph of the signum function (or sign function), denoted
by sgn and defined by
{-101
sgn x =
sgn x is read as "signum of x." Define each of the following functions
piecewise and sketch their graphs:
if if if x < 0 x 00<x
Transcribed Image Text:3. (a) Sketch the graph of the signum function (or sign function), denoted by sgn and defined by {-101 sgn x = sgn x is read as "signum of x." Define each of the following functions piecewise and sketch their graphs: if if if x < 0 x 00<x
(b) xsgn x
(c) sgn (x + 2)
(d) x -3 • sgn x
Transcribed Image Text:(b) xsgn x (c) sgn (x + 2) (d) x -3 • sgn x
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