gaokao 2022 Q3

gaokao · China · national-B-arts 5 marks Vectors Introduction & 2D Magnitude of Vector Expression

Given vectors $a = ( 2,1 ) , b = ( - 2,4 )$ , then $| a - b | =$
A. 2
B. 3
C. 4
D. 5

Given vectors $a = ( 2,1 ) , b = ( - 2,4 )$ , then $| a - b | =$

A. 2

B. 3

C. 4

D. 5