The function cosh ( cos x) decreases in

2 cosh 3 cosh 5 =

The function x^x is decreases in

If the function (cos x+K sin x)/(2cos x+3sin x) is decreasing in its domain then K is

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

Write the interval in which the function f(x)=cos x is strictly decreasing.

Prove that the function f(x)=cos x is strictly decreasing in (0,pi)

Test whether the following functions are increasing or decreasing: f(x) = cos x ,x in (0, pi)

Find the intervals in which the following functions are increasing or decreasing : cos^-1((1-x^2)/(1+x^2))