1.

If a,b,c,d > 0 , x in R and (a^2 + b^2 +c^2)x^2-2(ab+bc+cd)x+(b^2+c^2+d^2) le 0 then |{:(33,14,loga ),(65,27,log b ),(97,40,log c):}|=

Answer»


SOLUTION :f(1) < 0
f(-1) < 0
f(0) > 0 < br> `alphain ` (-1,0)
`beta in` (0,1)
`[ALPHA ] + [beta]`
-1+0=-1


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