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Can anyone help me in this. There's some kind of trick that
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Anonymous
2016-01-25 20:02:42 Post No. 7810294
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Anonymous 2016-01-25 20:02:42 Post No. 7810294 [Report]
Can anyone help me in this.
There's some kind of trick that I can't seem to find.
>>
Anonymous 2016-01-25 20:04:37 Post No.7810298
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Anonymous 2016-01-25 20:04:37 Post No.7810298 [Report]
>what is trigonometry
http://www.wolframalpha.com/input/?i=sin%28x%29*cos%28y%29

Back2School with you
>>
Anonymous 2016-01-25 20:06:02 Post No.7810300
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Anonymous 2016-01-25 20:06:02 Post No.7810300 [Report]
>>7810298
That isn't the problem. Computing 10-point dft is time consuming. There's somekind of trick in here
>>
Imnot Arobot 2016-01-26 01:32:44 Post No.7810853
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Imnot Arobot 2016-01-26 01:32:44 Post No.7810853 [Report]
DFT is a linear function, so I would write
[math] \displaystyle \cos \left ( \frac{3 \pi }{5}n \right ) \sin \left ( \frac{4 \pi }{5}n \right )= \frac{1}{2} \left ( \sin \left ( \frac{ \pi }{5}n \right )+ \sin \left ( \frac{7 \pi }{5}n \right ) \right )[/math]
and sum the 10-point DFT for the two sine functions.
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