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. Which of the following pairs of function are identical? (a) f(x)=en sec "x and g(x)=sec™ (b) f(x)= tan (tan¬' x) and g(x)= cot (cotx) (c) f(x)=sgn (x) and g(x)=sgn (sgn (x)) (d) f(x)=cot² x -cos² x and g(x)= cot² x - cos x %3D %3D %3D X COS %3D

. Which of the following pairs of function are identical? (a) f(x)=en sec "x and g(x)=sec™ (b) f(x)= tan (tan¬' x) and g(x)= cot (cotx) (c) f(x)=sgn (x) and g(x)=sgn (sgn (x)) (d) f(x)=cot² x -cos² x and g(x)= cot² x - cos x %3D %3D %3D X COS %3D

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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2. Which of the following pairs of function are identical? (a) f(x)= en sec *x -1 and g(x)=sec x) and g(x)= cot (cotx) -1 %3D %3D (b) f(x)= tan (tan¬' (c) f(x)=sgn (x) and g(x)= sgn (sgn (x)) (d) f(x)= cot² x ·cos² x and g(x)= cot x- cos" x -1 %3D %3D %3D %3D .2 %3D
Transcribed Image Text:2. Which of the following pairs of function are identical? (a) f(x)= en sec *x -1 and g(x)=sec x) and g(x)= cot (cotx) -1 %3D %3D (b) f(x)= tan (tan¬' (c) f(x)=sgn (x) and g(x)= sgn (sgn (x)) (d) f(x)= cot² x ·cos² x and g(x)= cot x- cos" x -1 %3D %3D %3D %3D .2 %3D
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