Question: 1. Find when r = 1, s= -1 if w= (x+y+z) x=r-s, y = cos(r+s), z = sin(r + s).

1. Find when r = 1, s= -1 if w= (x+y+z) x=r-s,

1. Find when r = 1, s= -1 if w= (x+y+z) x=r-s, y = cos(r+s), z = sin(r + s).

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