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#1 2012-11-25 02:51:14

pokrate
Member
Registered: 2012-11-16
Posts: 13

What is dx.dx ?

I always wondered about dx.dx ? How to handle that ? If I consider a small triangle with height = dy, and width dx, then
hypotenuse dh = sqrt(dy^2 + dx^2). Now suppose I want to differentiate this equation wrt time t, what we will get  ?

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#2 2012-11-25 05:11:58

scientia
Member
Registered: 2009-11-13
Posts: 222

Re: What is dx.dx ?

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#3 2012-11-25 05:41:32

pokrate
Member
Registered: 2012-11-16
Posts: 13

Re: What is dx.dx ?

Thanks for the reply. Hopefully I will make some big leap forward with this thing.

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#4 2012-11-25 05:46:21

scientia
Member
Registered: 2009-11-13
Posts: 222

Re: What is dx.dx ?

Correction:

Take the positive square root if h is increasing with respect to t, the negative square root if decreasing.

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