Recent content by abel_ghita

what about.. you know that Pmax is right underneeth the center of gravity which is r=2.67 and θ=0 and also Pmax/min is the second derivative of function p..which i suppose is \partial^2p/\partialr^2 * dr+ \partial^p/\partialθ^2 * dθ and your only variable is C2

uh.. yes.. thanks a lot! it seems today i got some lack of attention.. Thanks again!

yes, you're all right! sorry! though..what if we make it a definite integral..let's say between pi/6 and pi/3 (so we have no problem with the existence of cot in any point)..so we end up again with I=1+I.. wht does it mean?

**** :eek:..srry mate..hope I can delete the post :shy:

You better check again..I don't think I've done any sign-related mistake..tell me where!..and I don't think there's any problem regarding that's an indefinite integral..I'll add the constant, you're right..but any integral shoul depend on a variable, right?? well I know ∫cot(x) = -ln|sin(x)|...

http://www.wolframalpha.com/input/?i=x%3Darctan%28x%29&lk=4&num=2 so I guess +-1.5708

Homework Statement I=∫cot(x)dx Homework Equations wht's wrong in this approach (integrating by parts) The Attempt at a Solution...

Thanks! Yes..those two other solutions were my problem...Newton-Rhapson?? i didn't even hear about this so far.. but i'll search for it... In the mean time.. could you find this approximation for me? Thanks!:wink:

hello! I'm new over here.. Hope I'm writing where it should be written. What is the solution of [SIZE="6"]x=tangent(x) ? Well.. in fact I'm looking for the point where the graphs of function tangent and its inverse, arctangent, intersect each other (if we plot them on the...