If `y = 8x^3 - 60x^2 +144x +27` is a decreasing function in the interval `(a,b)`, then `(a,b)` is

The function x^4-4x is decreasing in the interval

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

The function f(x) = x^x decrease on the interval

The function f(x)=(sinx)/(x) is decreasing in the interval

Statement-1: The function f(x)\ =\ ln\ x is increasing in (0,10) and g(x) = 1/x is decreasing in (0,10) Statement-2: If a differentiable function increases in the interval (a , b) then its derivative function decreases in the interval (a , b) .