Leysa - ∫ _{T/4}^frac{3T{4}}cos(2pinft)dt+int_{3T/4}^Tcos(2pinft)dt

$$- \int _ { \frac { T } { 4 } } ^ { \frac { 3 T } { 4 } } \cos ( 2 \pi n f t ) d t + \int _ { \frac { 3 T } { 4 } } ^ { T } \cos ( 2 \pi n f t ) d t$$

Meta

$$\left\{\begin{matrix}\frac{\sin(\frac{\pi Tfn}{2})-2\sin(\frac{3\pi Tfn}{2})+\sin(2\pi Tfn)}{2\pi fn},&n\neq 0\text{ and }f\neq 0\\-\frac{T}{4},&f=0\text{ or }n=0\end{matrix}\right.$$

Diffra með hliðsjón af n

$$\left\{\begin{matrix}\frac{\pi Tfn\cos(\frac{\pi Tfn}{2})-6\pi Tfn\cos(\frac{3\pi Tfn}{2})+4\pi Tfn\cos(2\pi Tfn)+4\sin(\frac{3\pi Tfn}{2})-2\sin(\frac{\pi Tfn}{2})-2\sin(2\pi Tfn)}{4\pi fn^{2}},&n\neq 0\text{ and }f\neq 0\\0,&f=0\text{ or }n=0\end{matrix}\right.$$