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

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Answer 1 · 2018-04-11T12:23:40

#|\u|# asks for the length of the vector.

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

#|\u| = sqrt((2)^2+(-3)^2)#

#|\u| = sqrt(13)#

Answer 2 · 2018-04-11T12:56:46

#|u|=sqrt13#

#"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#