Sum
If `[x, y][(x),(y)] = [25]` and `[(-x, y)][(2x),(y)] = [-2]` find x and y if `x, y ε Z` (integer)
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Solution
`[x,y][(x),(y)] = [25]`
`x^2 + y^2 = 25`
and
`-2x^2 + y^2 = -2`
`x , y ε Z` (interger)
If can observed that that above two equation are satisfied when `x = +-3` and y = +-4
Concept: Addition and Subtraction of Matrices
Is there an error in this question or solution?
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