Question

Doing a Fourier Series Problem, got boggled with this problem. My main problem is that it gives of something like cos((4πnx)/5) for which I cant find an equivalent value to input for the general formula.

Poorly but rightly painted picture of the problem in comment section.

Answer 1

Yeah if the pattern repeats itself, the angular frequency would be \(\dfrac{2\pi}{5}\)

Answer 2

which gives me the problem later on in getting \[a _{n} \] and \[b _{n}\] which will yield something like \[\cos \frac{ 2\pi nx }{ 5 }\] and after multiplying with the limits will give \[\cos \frac{ 4\pi n }{ 5 }\] for which I cant find and equivalent function to replace it with for the general equation

Answer 3

@ganeshie8 what do you think sir?

Answer 4

how is T 5?