Mathematics for IGCSE & O level - Vectors (Section 4 - No. 16)
Given a vector a, the result of 3a is that the vector is _____.
Multiplied by 3
Rotated 90 degrees
Reflected over the x-axis
Added to itself 3 times
解释
Multiplying a vector by a scalar (a number) resizes it, i.e. multiplied by 3.