18) Determine the core and the image of the following linear maps:
i) f 1: R 3 → R: f 1 (x 1, x 2, x 3) = 4 x 1 - x 2 + 6 x 3;
18) Determine the core and the image of the following linear maps:
i) f 1: R 3 → R: f 1 (x 1, x 2, x 3) = 4 x 1 - x 2 + 6 x 3;