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edr1c
Group Title
in fourier series cos(npi) is (1)^n and sin(npi)=0,
what is cos(npi/2) and sin(npi/2)?
and when the answer is 0 when n is odd i change n into 2n, while if answer is 0 when n is even i change n into 2n1.
do i apply the same thing for npi/2?
 2 years ago
 2 years ago
edr1c Group Title
in fourier series cos(npi) is (1)^n and sin(npi)=0, what is cos(npi/2) and sin(npi/2)? and when the answer is 0 when n is odd i change n into 2n, while if answer is 0 when n is even i change n into 2n1. do i apply the same thing for npi/2?
 2 years ago
 2 years ago

This Question is Closed

edr1c Group TitleBest ResponseYou've already chosen the best response.0
im always stucked here when im doing the cosine and sine series in the PDE, especially when its stepfunction with pi as interval.
 2 years ago

Herp_Derp Group TitleBest ResponseYou've already chosen the best response.2
\[\cos(\pi/2n) = \begin{cases} (1)^{n/2} &\;\;\;\;\;\;\text{if }n\text{ is even}\\ 0 &\;\;\;\;\;\;\text{if }n\text{ is odd} \end{cases}\]\[\sin(\pi/2n) = \begin{cases} 0 &\;\text{if }n\text{ is even}\\ (1)^{(n1)/2} &\;\text{if }n\text{ is odd} \end{cases}\]
 2 years ago

edr1c Group TitleBest ResponseYou've already chosen the best response.0
oh. so if i want n to represent for all n, change n into 2n if n is odd gives 0, and change n into 2n1 if n is even gives 0?
 2 years ago
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