- #1
ahmadmath
- 4
- 0
I cannot figure out the sum of this finite series:
|ysin(x)|+|y^{2}sin(2x)|+...+|y^{n}sin(nx)|
where y is real.
so I want to listen any opinion may help me>
|ysin(x)|+|y^{2}sin(2x)|+...+|y^{n}sin(nx)|
where y is real.
so I want to listen any opinion may help me>