EscherichiaRinku
  • EscherichiaRinku
Need some help integrating this and finding the coefficients (one given here as c and other comes from integration). \[y = \frac{c}{2}\int\limits \frac{1}{1-\sin^3(3x)}dx\] with following boundary constraints: \[y(-\frac{\pi}{12})=\frac{1}{2},\ y(\frac{\pi}{12})=\frac{3}{2}\] I can't believe this is an exam exercise, it's takes too long to solve it than it's worth the points >.<
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
my guess is that you cannot find a nice closed form for this integral, but i will be quiet and let a smarter person try
EscherichiaRinku
  • EscherichiaRinku
I tried both substituting the denominator or substitute sin(3x), but both ways that one resulted in a way too long formula x_x;
Shayaan_Mustafa
  • Shayaan_Mustafa
have you integrated this?

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EscherichiaRinku
  • EscherichiaRinku
my simpler result our of two looks like this: \[-\frac{9c}{4}(\sin^2(3x)cox(3x))+\frac{1}{4}(\ln(1-\sin^3(3x))+\frac{1}{2}K\] and its quite a mess to find the constants. I wonder if this integration result is even correct o.0
Shayaan_Mustafa
  • Shayaan_Mustafa
is this complete and full and final result?
EscherichiaRinku
  • EscherichiaRinku
The integration is complete (not necesarily without errors) and this still needs the constants c and K, which are also quite a pain to find :(

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