SOLUTION: 1. Find the magnitude of the following vector: v = -2i - 4j. 2. Find the unit vector that has the same direction as the vector below: v = 4j 3. In what quadrant is the terminal

Algebra ->  Vectors -> SOLUTION: 1. Find the magnitude of the following vector: v = -2i - 4j. 2. Find the unit vector that has the same direction as the vector below: v = 4j 3. In what quadrant is the terminal      Log On


   

Question 149681: 1. Find the magnitude of the following vector: v = -2i - 4j.
2. Find the unit vector that has the same direction as the vector below: v = 4j
3. In what quadrant is the terminal point of the vector below located?
v = 5i - 3j
4.The vector, v, is multiplied by a scalar as shown below. v = -i + j -3(v)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.
2. v%5B1%5D=v%2Fabs%28v%29
v%5B1%5D=4j%2F4
v%5B1%5D=j
3. (5,-3) Starting at the origin, that 5 right, 3 down.
4th Quadrant.

4.v+=+-i+%2B+j
++-3%28v%29=%28-3%29%28-i%29%2B%28-3%29j
++-3%28v%29=3i-3j