Directional Derivative & Gradient Vector

http://openstudy.com/study#/updates/50a92e1fe4b082f0b8534b84

How was the formula T = k/r obtained?

Question

Directional Derivative & Gradient Vector

http://openstudy.com/study#/updates/50a92e1fe4b082f0b8534b84

How was the formula T = k/r obtained?

anonymous · Answer

I understand that that the temperature is inversely proportional but I don't understand how/why the k is there.

anonymous · Answer

"k" would be the proportionality constant.

the factor by which they are proportional.

when you say T is inversely proportional to r, you have T = k*(1/r) because the statement holds true for any value of k. 

does this clear it up a bit?

anonymous · Answer

Yes thank you!