Charles Link's latest activity

After transformation of ##X_2=3-x_2## the two partial differential equations are $$-2(4-x_1^2 -X_2^2)x_1+(x_1+X_2-3)=0$$ $$-2(4-x_1^2...

@anuttarasammyak Perhaps you also noticed this already, but I find it interesting that with your exact solution, the slopes of the...

@anuttarasammyak Thank you very much for your solution above. It is excellent. <3 <3

I am sorry for my careless mistakes on L. I corrected #4. It seems in good accord with your result.

continued from #2: With the help of Wolfram I get one real solution...

@anuttarasammyak We are going to need to look over your two partial derivative expressions carefully, because your solution is...

@anuttarasammyak That's one part of what I did to solve it. Those two partial derivative expressions are really too clumsy to solve...

Square of the distance is $$L^2=(y_1-y_2)^2+(x_1-x_2)^2=(4-x_1^2-(x_2-3)^2)^2+(x_1-x_2)^2$$ The condition of minimum is $$\frac{\partial...

The other day a friend of mine gave me the above problem which I found rather interesting. I was able to get a numerical solution...

The above is a photo of a 3'0" snowman that I made today, Monday 3-16-26 in Chicago. It was several degrees below freezing so packing...

100 kg of potatoes consists of 99% water. After some water evaporates, the potatoes consist of 98% water. What is the new weight of the...

In Jomtien

I have also seen one from an airliner like that.

I think I remember once seeing a rainbow below the horizon... from an airplane at cruising altitude, flying near a rainstorm.