`f(x)=x^(5)-20x^(3)+240x,` then f(x) is
O Monotonically decreasing everywhere
O Monotonically decreasing on `(0,oo)`
O Monotonically increasing on `(-oo,0)`
O Monotonically increasing everywhere

If f(x)= kx-sin x is monotonically increasing then

The function f(x)=cos x -2 px is monotonically decreasing for

Function f(x) = log sin x is monotonic increasing when

the function (|x-1|)/(x^(2)) is monotonically decreasing at the point

f(x) = cos x is monotonic decreasing under which one of the following conditions ?

f(x)=x+(1)/(x),x!=0 is monotonic increasing when

Function f(x) = sin x – cos x is monotonic increasing when -

Let f and g be two differentiable functions defined on an interval I such that f(x)>=0 and g(x)<= 0 for all x in I and f is strictly decreasing on I while g is strictly increasing on I then (A) the product function fg is strictly increasing on I (B) the product function fg is strictly decreasing on I (C) fog(x) is monotonically increasing on I (D) fog (x) is monotonically decreasing on I