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Find X and Y If X + Y = - Mathematics and Statistics

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Question

Find x and y if `x + y = [(7,0),(2,5)] , x - y[(3,0),(0,3)]`

Sum

Solution

`x + y = [(7,0),(2,5)]`   ...(i)

`x - y = [(3,0),(0,3)]`   ...(ii)

Adding (i) and (ii)

`2x = [(10,0),(2,8)]`

`therefore x = [(5,0),(1,4)]`

Subtracting (ii) from (i)

`2y = [(4,0),(2,2)]`

`therefore  y = [(2,0),(1,1)]`

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2014-2015 (October)

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