Re: Vector problem

• To: mathgroup at smc.vnet.net
• Subject: [mg115896] Re: Vector problem
• From: Mark Perrin <m.perrin at me.com>
• Date: Tue, 25 Jan 2011 04:19:56 -0500 (EST)
• References: <201101241023.FAA29224@smc.vnet.net>

```Ha! Forget my last question. The power of Mathematica. Simply wrap these statements into a solve function.

Solve[{Projection[z,u] == u, Projection[z,v] ==v}, z]

MP

On 2011-01-24, at 10:52 PM, Mark Perrin wrote:

> I'm having trouble formulating a problem in Mathematica.
>
> If I have two 2D vectors, u and v that are the known projections of a third unknown 2D vector z, how do I determine z?
>
> My word problem (I think) is find the solution to: Projection[z,u] == u && Projection [z,v] == v
>
> Any help in starting this problem would be much appreciated.
>

```

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