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/sci/ - Science & Math

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File: 65 KB, 517x494, hjk.png [View same] [iqdb] [saucenao] [google]
6988013 No.6988013 [Reply] [Original]

CHALLENGE: Using your own chosen program, find either sin or cos curves equal to the ones shown in pic related. Tried doing this with GS5 and a bunch of other shit but it's proving to be difficult. Race me, /sci/.

>> No.6988057

>>6988013
>can tell the bottom one is not a basic trig just by looking at it
>gr8 b8 m8

>> No.6988059

>what is fourier series

>> No.6988103

>>6988059
No, really, what is it?

>> No.6988144

A way to construct any periodic function as a series of sines and cosines.

>> No.6988159

>>6988059
> good luck fouriering that picture anon, what with the clear axis markings and all

>> No.6988167

the top one is sin(x)
for the second one: label you fucking axes or gtfo

>> No.6988189
File: 81 KB, 521x482, rszlogo.png [View same] [iqdb] [saucenao] [google]
6988189

There: all the information you could ever need.

>> No.6988247
File: 44 KB, 550x449, 1403209397986.jpg [View same] [iqdb] [saucenao] [google]
6988247

>>6988189
Top line would be something around 5sin(0.5(x))+0.5
Other one I got no idea, OP.

>> No.6988498
File: 1.43 MB, 524x289, NLHrgIa.gif [View same] [iqdb] [saucenao] [google]
6988498

>receives all information necessary
>unable to solve two basic trig equations
never change, sci :^)

>> No.6988782

>>6988498
>all information necessary
>basic trig equations.....
>my sides....

Ok so on a serious note: the bottom one is nearest to 3.25*sin(x/2+0.35), play with additional Fourier terms to make the descending slope steeper - but Fourier is a really bad tool for this, because the function is not periodic (or does not need to be) and you need the output smooth for your damned logo, so you'd need hundreds of Fourier terms and that really cannot be done by hand.
You'd be better off using Excel or Matlab and curve fit a polynomial. Pick important node points (min, max, inflection, a few on slopes), no more than 8 or 10 points.

>> No.6988845
File: 186 KB, 500x678, 017122.jpg [View same] [iqdb] [saucenao] [google]
6988845

>>6988782
You da real MVP! - OP
Have some softcore OC