Check Cos(ne)= Cea (n(etsT) Peasoni Caslnle+am)) = Coa(ne +na) %3D
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
I don't understand why cos(ntheta+ n2pi)=cos(ntheta). Can you please explain it to me? Thank you
![Consider
°S"+\S=0
s(8)= Ci+C O
> Ca=0
IS(0)=Ci
S6) = C, cosh(we) + Cadinhko)
>Not peicodlc , don't consicler
310)=5(0+TT) uill hold if
(neN)
%3D
n=1,2,3.
Chak
Cos(ne) = ces (n(otST))
Peason: Caolnl0+a)) = Cos(ne
%3D
= cos(no)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fca708747-373f-4dbe-b127-10492ca0e68f%2F4fd8174a-d25f-46a5-9891-2c41187827cf%2Fylnr636_processed.png&w=3840&q=75)
Transcribed Image Text:Consider
°S"+\S=0
s(8)= Ci+C O
> Ca=0
IS(0)=Ci
S6) = C, cosh(we) + Cadinhko)
>Not peicodlc , don't consicler
310)=5(0+TT) uill hold if
(neN)
%3D
n=1,2,3.
Chak
Cos(ne) = ces (n(otST))
Peason: Caolnl0+a)) = Cos(ne
%3D
= cos(no)
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