Question

The Fourier series expansion for the function

 

2

2

x f x          over the interval 0 2  x  is

given by

2 2

2

1

1

cos

2 12 n

x

nx

n

  



          . Then

the value of 222

111 ... 123

 is​

Answer 1

Answer:

Please type your question properly. I didn't understand. I think this is a Maths question.