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/sci/ - Science & Math


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File: 46 KB, 642x642, Maths3[1].jpg [View same] [iqdb] [saucenao] [google]
6929439 No.6929439 [Reply] [Original]

can you help me integrate this fellas?

f is a function of n.
fp = f prime = df/dn

integral [ fp(1-fp)dn ]

>> No.6929454
File: 850 B, 166x41, CodeCogsEqn.gif [View same] [iqdb] [saucenao] [google]
6929454

I don't feel like solving it but I'll help you improve your chances of getting someone else to.

>> No.6929455

no, read the rules

>> No.6929457

Did you just write
>fp = f prime = df/dn
because you couldn't find the ' symbol!?

Also, your question doesn't have a general solution.

>> No.6929458

I'm curious as to how you'd do this. Looks like some chain rule shit.

>> No.6929467

starts to repeat at some point when trying to solve with integration by parts. I'll just see if I can move from there and share the result here for curious people!

and I didn't know there were symbols here, as said, newbie :)

>> No.6929469

This is how you would write it you fucking neandrathal. Are you really too lazy to google the integral ascii symbol and too dumb to write ' instead of p?

∫f'(n)(1 - f'(n))dn

As for how to solve it, idk lol. Maybe distribute it it out like this:

∫[ f'(n) - f'(n)f'(n) ]dn

And use integration by parts for the second term?

>> No.6929478

>>6929469
*p instead of '

>> No.6929489

>>6929455
reported for shitposting

>> No.6929502
File: 1.78 MB, 3264x2448, 20141207_011258.jpg [View same] [iqdb] [saucenao] [google]
6929502

well, it repeats but it is kinda a tough one. here's what I've got so far

>> No.6929521
File: 1.75 MB, 3264x2448, 20141207_011838.jpg [View same] [iqdb] [saucenao] [google]
6929521

>>6929469
man I love you!

thanks :)

p.s. solution in the image

>> No.6929586

>>6929521
too early to celebrate, meh. that gives 1=1 when simplified :/

>> No.6929589

>>6929521
Doesn't that just leave ∫f'(n)dn = f(1-f'(n)) + f(n)f'(n) instead of the original integral?

And shouldnt ∫f'(n)dn just be f(n) anyways?

>> No.6929592

>>6929489
reported for announcing reports

>> No.6929652

>>6929592
reported for announcing reports

>> No.6929678

>>6929652
reported for announcing report of post announcing report