A function is matched below against an i...

A function is matched below against an interval where it is supposed to be increasing. Which of the following parts is incorrectly matched? Interval, Function [2, `oo)` , `2x^3-3x^2-12 x+6` `(-oo,oo)` , `x^3=3x^2+3x+3` `(-oo-4)` , `x^3+6x^2+6` `(-oo,1/3)` , `3x^2-2x+1`

`(-infty,1/3)``3x^2-2x+1`

`(-infty,-4)``x^2+6x^2+6`

`(-infty,infty)``x^3-3x^2+3x+3`

`[2,infty)` `2x^3-3x^2-12x+6`

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