Question: 1. Find a vector with length 2 that points in the same direction as i→ - j→ + 2k→ .
2. Find the value(s) of a making v→ = 5ai→ - 3j→ parallel to w→ = a2i→ + 6j→.
3. (a) Find a unit vector from the point P = (1, 2) and toward the point Q = (4, 6).
(b) Find a vector of length 10 pointing in the same direction.