Umm ,,, i tried what you said ,, i think that will turn the integral back to itself :S
except i'll get Integral of Sqrt(tan(x))dx
I'm really stuck now :biggrin:
Thanks by the way
I appreciate it :D
and if you get any ideas i'll be glad to try some :)
I think that won't work ,, bcoz i'll get Integral of (Sqrt(u)/(1+u^2))du
then what the next step?!!
i also tried integration by parts after the step u mentioned ,, but it just gets more complicated :confused:
More Help Is Appreciated :)
You can always get the radius from circle equations !!
However, all circle equations are integrated by trigonometric substitution
and it can also be done by integration by parts but that is a bit tricky!!
thanx for the reply :smile:
well ,, the thing is that i'm not really good at contour integration ,, i've been searching for a text to study contour integration for ages ,, and still can't find one with good details and examples
and still don't know when to use contour integration!!
integrating a circle ,,
my main question is that, can we integrate it by contour integration technique ?
and if yes ,, would you plz show me how :) or just give me a hint :D
Thanks is advance :-)
y^2 + x^2 = a^2
where a= r