Hello, i was hoping someone would be able to help with a couple of questions im struggling with.

I need to use the syntax for the determinant to determine if the equation below has a unique solution? Ive got another 2 lots of 3 equations that require the same answer but im not really where to start.

2x+3y-z=2

-x+y+2z=2

x-4y+z=0

Any help would be appreciated.

Hello folks i was hoping for a spot of help.

I need to normalize three vectors. Each vector is 1 by 3 in size. Ive started by defining the vector then normalizing it by what i have defined it. The next stage is where im stuck, ive looked through various examples inclduing the one i this link: http://www.maplesoft.com/support/help/AddOns/view.aspx?path=LinearAlgebra%2fNormalize

Does anyone know where V:={1.55,1.56,1.53} comes from?