Question

2x-3y+4z=0,5x-2y-z=0,21x-8y+az=0 has non trivial solutions then a=?​

Answer 1

Answer:

Given, 2x−y+2z=2,x−2y+z=−4,x+y+λz=4,then the value of λ such that the given system of equations has no solution, is