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The set of all points where f(x) is incr...

The set of all points where `f(x)` is increasing is `(a,b)cup(c,oo)`. Find `[a+b+c]` (where [.] denotes the greatest integre function) given that
`f(x)=2f((x^(2))/(2))+f(6-x^(2)),AAx inR`
`andf''(x)gt0,AAx in R.`

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