1.

Consider the system of simultaneous linear equation 2x-3y+5z=12 3x+y+lambdaz=u x-7y+8z=17 {:(,"List-I",,"List-II",),((P),"for unique solution" ,(1),lambda=2.mu ne, 7),((Q),"For infinite solutions",(2),lambda ne 2. mu in R,),((R),"For no solution",(3),lambda = 2. mu = 7,):}

Answer»


Solution :`DELTA=[(2,-3,5),(3,1,LAMBDA),(1,-7,8)]=(11lambda-22)=11(lambda-2)`
`Delta_(3)[(2,-3,12),(3,1,mu),(1,-7,17)]=11mu-77=11(mu-7)`
Now, verify it`


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