## Mimi_x3 one year ago how did they get

1. Mimi_x3
2. Mimi_x3

I dont underestand how they got this: https://gyazo.com/eec65af84bb1fd9cde28b386bf62caaa

3. Mimi_x3

is that an integral properoty

4. anonymous

days of fourier series. >.<

5. anonymous

integral of 0 is just 0...

6. ParthKohli

$\frac{1}{L}\int_{-L}^L f(x) = \frac{1}{2}\int_{-2}^2f(x)$Probably used the periodicity of the function?

7. thomas5267

$\int_1^20\,dx=[c]_1^2=c-c=0\\ \frac{d}{dx}c=0$

8. IrishBoy123

read it again and pay attention to how they break up th eintervals of integration, first by symmetry then into 1's and 0's.

9. Mimi_x3

i mean integartion limts like 2 to 0 then they got 1 to 0 then 2 to 1

10. IrishBoy123

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