Question #f4b5b
1 Answer
Jan 9, 2017
#2v-4u=((-24),(0))#
Explanation:
#2v-4u=2((2),(4))-4((7),(2))# Each of the x and y components can be multiplied by the scalar quantity.
#rArrcolor(red)(2)((2),(4))-color(red)(4)((7),(2))#
#=((color(red)(2)xx2),(color(red)(2)xx4))-((color(red)(4)xx7),(color(red)(4)xx2))=((4),(8))-((28),(8))# Similarly, subtract corresponding x and y components.
#rArr((4),(8))-((28),(8))=((4-28),(8-8))=((-24),(0))#
