Recent content by bobmerhebi

well i now know how this turns out to be. simple said, the radii of the pulleys are assumed to be negligible with respect to the length of the strings.

Double Atwood Machine: relation between the contraints & the variables ?! Hello. I am taking an analytical mechanics course & there's 2 "simple" equations relating the constraints to the variables. The problem is actually a class example. Here is it 1. The figure of the example is attached...

Hello there, I am taking a Numerical Methods course & i had a lecture today when we did an example on the 3-point formula to approximate the 1st derivative of f. the example included 4 given x's with their images by f. & we had to get all the images for the 1st derivative of f. so we...

Doing this i get: f(z) = 1 - (1 + z2/2 + z4 / 4! + z6 / 6! + ...) = - \sum^{\infty}_{n = 1}z2n/(2n)! tends to 0 as z tends to 0 but this is not the limit we have for a pole. but its for a removable singular point. isn't it ?

[b]1. Show that f(z) = [1 - cosh(z)] / z3 has a pole as its singular point. Determine its order m & find the residue B. [b]2. lim |f(z)| tends to \infty as z tends to singular point bm + bm+1(z-z0)+...+ b1(z-z0)m-1 + \sum^{\infty}_{n = 0}an(z-z0)n= (z-z0) m f(z) [b]3. f(z) = [1...

How to ? Easy. You just need to search for a cam-telescope adapter. its called by some a telescope adapter & others call it a cam adapter. you get either a kit or the parts individually. I personally recommend the kit. It consists or the adpater + a T-ring that fits you cam from one end & the...

Hey there, No its NOT necessarily. I have been an amateur astrophotographer for about more than a year now. I got my first digi cam; a Canon G9, although its expensive but you can find other than this that you can use. My first astrophoto was using my Canon EOS 750QD which is around 10 years...

Dear Mentors, Could anyone include explanations about the Laurent series, & the Residues & Poles ? Everything for an undergraduate course ? I didn't find anything about that on the forum. if there's a good one please tell me. Thank You in Advance ---------------- Yours Truly BOB Merhebi...

Hello guys. I would just like to share with you my images & webstie. Direct link to my images: http://picasaweb.google.com/BOBMerhebi Website: [PLAIN]www.astrobob.tk[/URL] I will be glad to read you comments or suggestions. Thank you, BOB

thx i will retry it late this night. unfortunately i have to submit my assignment 2moro morning. but never mind. thanks for ur sincere help

thx i will retry it late this night. unfortunately i have to submit my assignment 2moro morning. but never mind. thanks for ur sincere help

y = (5/6)sin2x + cos2x + (1/3)sinx ... (2) with 0 ≤ x ≤ π/2 y = sin 2x + cos 2x ... (4) with x (just greater than not or equal) π/2 & y(π/2) = -2/3 & y'(π/2) = -5/3 then i should use these new initial conditions with (4). for what? i have y = sin 2x + cos 2x ... (4) sorry, it might...

sorry but i still don't get it. lets go all over again. 1st u asked what is e. its the exponential. why ? is there anything wrong with it? 2nd: u told me to take a = \pi, less than & grater than \pi. why is that? & what do u mean by a? then u said to use y(\pi/2) & y'(\pi/2). but which...

sorry but i still don't get it. lets go all over again. 1st u asked what is e. its the exponential. why ? is there anything wrong with it? 2nd: u told me to take a = \pi, less than & grater than \pi. why is that? & what do u mean by a? then u said to use y(\pi/2) & y'(\pi/2). but which y? the...

ur right about c1 & c2 but i got used to use them for the homog. solution & A & B... for the particulat sol.'s after calculating for \pi/2 for both y & y' with x btw 0 & \pi/2 i get: y(\pi/2) = -2/3 & y'(\pi/2) = -1 . but now what? im asked to find a solution so that y & y' are...