parameters in a system of linear equations question

ktau2010 · **Joined:** Thu, 14 Jun 2012 16:15:13 UTC **Posts:** 4

how do I find the values of the parameter s for which the system has a unique solution in this problem?

3sx - 3y = 4
-6x - sy = 1

I already setuped the matrix vector equation but don't know what else. I also did det A = 0 where I got +-4 but don't know if that was the right method. how do I solve this problem?

afterwards how do I find all values of s such that the system above has a unique solution, find that solution?

Shadow · **Posted:** Thu, 14 Jun 2012 23:19:12 UTC

ktau2010 wrote:

how do I find the values of the parameter s for which the system has a unique solution in this problem?

3sx - 3y = 4
-6x - sy = 1

I already setuped the matrix vector equation but don't know what else. I also did det A = 0 where I got +-4 but don't know if that was the right method. how do I solve this problem?

afterwards how do I find all values of s such that the system above has a unique solution, find that solution?

The determinant is a fine way to do this.

ktau2010 · **Joined:** Thu, 14 Jun 2012 16:15:13 UTC **Posts:** 4

Shadow wrote:

ktau2010 wrote:

how do I find the values of the parameter s for which the system has a unique solution in this problem?

3sx - 3y = 4
-6x - sy = 1

I already setuped the matrix vector equation but don't know what else. I also did det A = 0 where I got +-4 but don't know if that was the right method. how do I solve this problem?

afterwards how do I find all values of s such that the system above has a unique solution, find that solution?

The determinant is a fine way to do this.

thx.

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parameters in a system of linear equations question

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