Homepage › Solution manuals › Stephen Friedberg › Linear Algebra › Exercise 3.3.6
Let T : R3 → R2 be defined by T(a,b,c) = (a + b,2a − c). Determine T−1(1,11).
If T(a,b,c) = (a + b,2a − c) = (1,11), then we get a + b = 1 and 2a − c = 11. This means the preimage set would be