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Let f (x) be a continuous function (defi...

Let `f (x)` be a continuous function (define for all x) which satisfies `f ^(3) (x)-5 f ^(2) (x)+ 10f (x) -12 ge 0, f ^(2) (x) + 3 ge 0 and f ^(2) (x) -5f(x)+ 6 le 0`
If distinct positive number `b_(1), b _(2) and b _(3)` ar in G.P. then `f (1)+ ln b _1), f (2) + ln b _(2), f (3)+ ln b _(3)` are in :

A

A.P.

B

G.P.

C

H. P.

D

A. G. P.

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