Charles Link's latest activity

Can you draw a diagram of where the poles are on this magnet? I had trouble following your explanations.

I want to repeat something from post 33 for those who might have missed it...

Some snapshots taken from the live stream. Times as recorded on my cellphone. GMT+2 23:49 01:54 02:07 02:09

I think I basically did that solving the cubic by linear approximation to first order, where once I got a solution, I could get an...

One can always resort to the Newton-Raphson method to solve ##\mathbf{f}(\mathbf{x}) = \nabla L = 0## by iteration, where each step...

Note: @Gavran 's method (post 15 above) needs a second power form to take the discriminant. @pasmith 's method works in the general...

I'm not sure I would expect it to, because the trajectory it's following is so far from the Moon, as compared with the Apollo missions...

I did find from one article in a google that the expected speed at closest approach would be 3,139 m.p.h. I am lead to believe the...

Did the rocket speed up when moon's gravity became stronger than earth's? There was one website that a friend of mine found that showed...

Yes, this way seems to get the result a little easier. I worked the ## y=4-x^2 ## and ## y=(2x-6)^2 ## problem by this method just...

Find the two points that share the same normal line. It would be a general way as @pasmith showed.

Excellent. By @Gavran's method, I have ## x_2=\frac{a}{5}+\frac{12}{5} \approx 2.54 ##. :) (see also posts 24, 25, 29, and 30). Note...

I got ##x_1=1.8317... \ x_2=3-\frac{x_1}{4}=2.5421...## The equation of ##x_1##: Other two casese : ##(x_1.x_2)=(-1.3444...

Please see the edits to my post 25. Thanks. <3 and I let Wolfram solve it: Three real roots. The smallest one is the one of interest...

@DaveE These two are no longer identical parabolas, but I believe @Gavran 's method will work for them. I'll try to post the result...