Re: Deriviation d/dt(x(t))
- To: mathgroup at smc.vnet.net
- Subject: [mg27451] Re: Deriviation d/dt(x(t))
- From: dennisw555 at aol.com (DennisW555)
- Date: Sun, 25 Feb 2001 20:55:57 -0500 (EST)
- References: <97a6up$akb@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
>I have a problem, having a definition of a circle: x^2+y^2=r^2
>Where x and y are functions of the time: x(t), y(t) and r ist a constant.
>
>Now I want to deriviate the equation to get the velocity vector.
>It should be : 2 x dx/dt +2 y dy/dt = 0
The velocity vector is simply {dx/dt, dydt}