1
/ / 0 for pi*k = 0
| |
| sin(k*pi*y) dy = < 1 cos(pi*k)
| |---- - --------- otherwise
/ \pi*k pi*k
0
$${{1}\over{k\,\pi}}-{{\cos \left(k\,\pi\right)}\over{k\,\pi}}$$
Ответ (Неопределённый)
[src] / // 0 for k = 0\
| || |
| sin(k*pi*y) dy = C + |<-cos(k*pi*y) |
| ||------------- otherwise|
/ \\ pi*k /
$$-{{\cos \left(k\,\pi\,y\right)}\over{k\,\pi}}$$