cos (z) = e+1 eiz+e-iz 2i eiz+e¯iz e+e 2i

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 26E
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0 خطأ
السؤال 4
cos (z) =
%3D
e+1
e1z+e
-iz
2i
elz+e
-iz
2
e+e-
2i
السؤال 5
Transcribed Image Text:0 خطأ السؤال 4 cos (z) = %3D e+1 e1z+e -iz 2i elz+e -iz 2 e+e- 2i السؤال 5
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