The function ` f(x) = 2x^(3) + 3x^(2) -12 x + 1` decreases in the interval

The interval on which the function f(x) = 2x^(3) + 9x^(2) + 12 x - 1 is decreasing is

Find the intervals in which f(x) = 2x^(3) - 9x^(2) - 12 x -3 is increasing and the intervals in which f(x) is decreasing.

The interval on which the function f(x) =2x^(3)+9x^(2)+12x-1 is decreasing is

The interval in which the function f(x) = 2 x^(3)+ 3x^(2) - 12 x + 1 is xtrictly increasing is

The function f(x) = (x)/(3) + (3)/(x) decreases in the interval

The interval on which function f(x) = 2x^(3)+9x^(2)+12x-1 is decreasing is

The interval on which the function f(x)=2x^(3)+9x^(2)+12x-1 is decreasing is :