Question

- Fourier Graph Q

Answer 1

- f(x) = x is just a 45 degree line right?

[O,L] = an interval on the X axis?

Answer 2

[-L, L]

Answer 3

the idea is they gave you a function defined from 0 to L
to make an odd extension, you use f(-x) = -f(x) to make an extension to -L

Answer 4

you now replicate that pattern to infinity in both directions