Solve for X vector

DanteNZ

New member
Joined
Mar 12, 2011
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5
Hey just wondering how I would go about this equation.

Solve 4x + (1, -1, 3) = (1, 3, -5) for x.
 

DanteNZ

New member
Joined
Mar 12, 2011
Messages
5
I have tried doing this.

4x = (1, -1, 3) - (1, 3, -5)
x = (1/4, -1/4, 3/4) - (1/4, 3/4, -5/4)

But that can't be right surely?
 

mmm4444bot

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Oct 6, 2005
Messages
10,251
DanteNZ said:
4x = (1, -1, 3) - (1, 3, -5)

The vectors are transposed in your subtraction (i.e., you subtracted the wrong vector).


x = (1/4, -1/4, 3/4) - (1/4, 3/4, -5/4)

Do the subtraction first, then divide both sides by 4.
 
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