# Find |u| ? U=<2,-3>

##### 2 Answers

Apr 11, 2018

#### Explanation:

In other words, you just need to use pythagoras theorem.

Apr 11, 2018

#### Explanation:

#"given "ulu=< x,y>" then the magnitude is"#

#|ulu|=sqrt(x^2+y^2)#

#"here "x=2" and "y=-3#

#rArr|ulu|=sqrt(2^2+(-3)^2)=sqrt13#