The highlighted in yellow is a mistake, right? I might be going insane. Where does the PI go?
Oct 1, 2013 #1 Turion 143 2 The highlighted in yellow is a mistake, right? I might be going insane. Where does the PI go? Attachments Selection_001.png 26.8 KB Views: 338
Related Differential Equations News on Phys.org Scientists develop laser system that generates random numbers at ultrafast speeds Skeletons reveal humans evolved to fight pathogens Scientists induce artificial 'magnetic texture' in graphene
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Oct 1, 2013 #2 Office_Shredder Staff Emeritus Science Advisor Gold Member 4,162 322 [tex] \cos(4(t+\pi)) = \cos(4t+4\pi) = \cos(4t) [/tex]
Oct 1, 2013 #3 SteamKing Staff Emeritus Science Advisor Homework Helper 12,796 1,668 Remember, sin and cos are periodic functions with period 2k*pi, k = integer.
Oct 2, 2013 #4 Turion 143 2 @Office_Shredder: Opps. Nice catch. @SteamKing: Isn't the period 2pi/k where k is the coefficient of t?
@Office_Shredder: Opps. Nice catch. @SteamKing: Isn't the period 2pi/k where k is the coefficient of t?
