Answer by 'yes' or 'no' each of the following 8 question. x and  y are real numbers

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.1: Equations
Problem 75E
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Answer by 'yes' or 'no' each of the following 8 question. x and  y are real numbers

 

(a) Is + equal to ?
(b) Is + equal to ?
(c) Is cos(2r) generally equal to 2 cos(x)?
(d) Is In(r + y) generally equal to In(r) + In(y)?
z+y
(e) Can In(x) be equal to zero? Can it be negative (can we have In(x) < 0)?
(f) Can e" be equal to zero? Can it be negative (can we have e" < 0)?
Transcribed Image Text:(a) Is + equal to ? (b) Is + equal to ? (c) Is cos(2r) generally equal to 2 cos(x)? (d) Is In(r + y) generally equal to In(r) + In(y)? z+y (e) Can In(x) be equal to zero? Can it be negative (can we have In(x) < 0)? (f) Can e" be equal to zero? Can it be negative (can we have e" < 0)?
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