Question #393e7

1 Answer
Somebody N.
Dec 3, 2017

#-4hati-18hatj#

Explanation:

Not sure why there is a vector w here. It dosn't relate to the question.

#u = [ -1,3]=-hati+3hatj#

#v=[2 , 4 ]=2hati+4hatj#

#-2u-3v= -2(-hati+3hatj)-3(2hati+4hatj)#

#=2hati-6hatj-6hati-12hatj=color(blue)(-4hati-18hatj)#

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