muthiarn
muthiarn
29-08-2017
Mathematics
contestada
x - y - z = -1
-x + y + y = 1
x + y - z = 1
Respuesta :
ghanami
ghanami
31-08-2017
hello :
X - y - z = -1 ...(1)
-x + y + z = 1 ...(2)
x + y - z = 1 ...(3)
(2) +(3) : 2y = 2 y = 1
subsct in (1) and (2) : x - z =0
-x +z = 0
so x = z the solution has form : (x , 1 , x ) .... x in R
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