equation

since the maximum value of lambda will be when a=b=c=1

then the equation becomes x³+x²+x+1=0

and the root lambda is =-1 hence |lambda| =|-1|= 1

hence option a

@ amit
i think this could be wrong[2]
if i am wrong justify ur STATEMENT 1

kamal

α+β+γ=-a
αβ+βγ+αγ=b
αβγ=-c

then u have to slve these three simultaneously using the give n condition
if u rnt able to solve it baad mein phir pooch lena
but that was a clue[1]

kamal do u agree with the way amit proceeded [7][7][7]
or the way i told u
i didnt found the answer
i just gave u a hint

k then i will try!!!!!!!!!!!

hey.... how to type eqns????????

if lambda is a root..... then substitue for it in the given eqn
for extrema diff the eqn wrt lambda
solve for lambda..... its a quadratic...

but after that i dunno how to proceed