The figure is a vector diagram where OA = a, OB = b and BE = 2OA, then AE is:
-a + b.
a + b.
3a + b.
a - b.
Given the vectors a and b, a + b is:
B.
A.
C.
D.
The direction of the vector -3i -3j is:
45°.
135°.
225°.
315°.
Given that the matrix below is equal to 0, then x is:
-6.
-2.
8.
2.
Given the vectors p and r, then p - r is:
