341Well if you have got a+b+c=0, then t=1 is a root.
1)If a>0>b>c & the system of eqn ax+by+cz,bx+cy+az=0,cx+ay+bz=0 has a non trivial soln,then find nature of roots of
(b+c)t2+(c+a)t+a+b=0 .
From first 3 eqns i got a+b+c=0 what next ??
2)
Let (1+x)2n=a0+a1x+....+a2nx2n
A:a0+a2+a4....+a2n=1/2 (a0+a1+a2....+a2n)
R:an+1<an & an-3=an+3
which option do u guys support ?? a/b
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4 Answers
12) the exapansion has 2n+1 terms and an+1 being the greatest .
thus R is false .