Mathematics FROM 3

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Mathematics FROM 3

Chapter 6 VECTORS

Addition and Substraction of Vectors

 

a-b=x1-x2y1-y2

 

a+b=x1+x2y1+y2
To add or substract two or more vectors, we add or substract corresponding components. I.e.: if a=x1y1 and b=(x2y2) then;

 

                                                          

And

Example: Given that a=3-2, b=-6-7 and c=54. Find:

 

 

  1. A+b+c
  2. B-c
  3. A-b
  4. C+a

 

Solution

  1. a+b+c=3-2+-6-7+54=3-6+5-2-7+4=2-3
  2. b-c=-6-7-54=-6-5-7-4=-11-11
  3. a-b=3-2--6-7=3--6-2--7=95
  4. c+a=54+3-2=5+34-2=(82)
par Claude Foumtum
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