I need help with this integral (I'll write it on a reply)
\[\int\limits_{}^{}dx \div \sin (x) \cos (x) \left( \sec (x) + \tan (x) \right) ^{1/4}e ^{(1/4)\sin (x)}\]
\[ \int \frac{1}{\sin(x)\cos(x)(\sec(x) + \tan(x))^{1/4}e^{\sin(x)/4}} dx\]
yes is that one but how do I solve it :S
are you sure this is the question or you made it up yourself?? wolfram is giving me errors http://www.wolframalpha.com/input/?i=integrate+1%2F%28sinx+cosx+%28sec+x+%2B+tanx%29^%281%2F4%29+e^%281%2F4+sinx%29%29
maybe I made a mistake is to solve a second grade equation :S I asked because I also was having second thoughts about it
what second grade equation??
https://www.google.com/search?q=second+grade+equation&ie=utf-8&oe=utf-8&client=ubuntu&channel=fs
\[\left( 4\times \cot (x) \right)y'' + \left( 4 - \sin (x) \right) y' - y = 0 \] y1= sin (x)
second order differential equation
sorry, I'm not there yet ... i'll reply next week!!!
:P ok
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