. 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

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

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