The signum (or sign) function, denoted by sgn, is defined by (a) Sketch the graph of this

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The signum (or sign) function, denoted by sgn, is defined by

(a) Sketch the graph of this function.
(b) Find each of the following limits or explain why it does not exist.
(i) limx→0+ sgn x
(ii) limx→0- sgn x
(iii) limx→0 sgn x
(iv) limx→0 | sgn x |

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Calculus Early Transcendentals

ISBN: 978-0538497909

7th edition

Authors: James Stewart

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Question Posted: Jun 21, 2010 04:49 AM

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The signum (or sign) function, denoted by sgn, is defined by (a) Sketch the graph of this

Question:

-1 if x<0 O if x=0 I if x>0 sgn x

Step by Step Answer:

a 1 0 b i Since sgna 1 for x 0 lim sgna lim ...View the full answer

Calculus Early Transcendentals

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