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nickadams
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Homework Statement
Prove that if you have 3 linearly independent equations in 3 variables, then there exists only 1 solution to the system.
Homework Equations
linear independence implies none of the equations can be expressed as a linear combination of the other equations.
The Attempt at a Solution
having 3 linearly independent equations in 3 variables means that if we viewed the equations as vectors, none of the vectors would be coplanar to the plane spanned by the two other vectors. So this means any of the vectors will cross the plane spanned by the other two at only 1 point.
But how to prove this?
Thanks