1.

If the following system has non-trivial solution,px + qy + rz = 0qx + ry + pz = 0rx + py + qz = 0,then which one of the following options is TRUE?

A. p – q + r = 0 or p = q = -r
B. p + q – r = 0 or p = -q = r
C. p + q + r = 0 or p = q = r
D. p – q + r = 0 or p = -q = -r
Answer» D. p – q + r = 0 or p = -q = -r


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