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Homework Statement
Prove that there exists only one linear transformation l: R3 to R2 such that:
l(1,1,0) = (2,1)
l(0,1,2) = (1,1)
l(2,0,0) = (-1,-3)
Find Ker(l), it's basis and dimension. Calculate l(1,2,-2)
Homework Equations
The Attempt at a Solution
I still find linear transformations really confusing. Something about the notation and what is being asked, I don't know...
The matrix associated to these linear transformations should be a 2x3 right?
L=AX
where L = linear transformation
A = matrix associated to linear transformation
X = vector
so, (1,1,0) = A*(2,1)
(0,1,2) = A* (1,1)
(2,0,0) = A*(-1,-3)
And there will be ONE matrix that is associated to all of these transformations? If this is correct, how can I find A?