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c) CoS z = 0 if and only if z = 2 +TTK, KE ZZ

c) CoS z = 0 if and only if z = 2 +TTK, KE ZZ

Advanced Engineering Mathematics
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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Only Answer 1c

(1) Using Fuler's formula a) For any For any CoS z = 0 b) For c) -prove the following. 2 Sin ² z + cos² z = 1 ZEC 2.₁,7₂ € ( 2 cos(Z₁ + Z₂ ) = COSZ, COSZ₂ - Sinz, Sinz if and only if z = 1/2+IK, KE ZZ
Transcribed Image Text:(1) Using Fuler's formula a) For any For any CoS z = 0 b) For c) -prove the following. 2 Sin ² z + cos² z = 1 ZEC 2.₁,7₂ € ( 2 cos(Z₁ + Z₂ ) = COSZ, COSZ₂ - Sinz, Sinz if and only if z = 1/2+IK, KE ZZ
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