["The function "(1)/(1+x^(2))" is decreasing in the "],[" interval "]

The function f(x)=(1)/(1+x^(2)) is decreasing in the interval (i)(-oo,-1)(ii)(-oo,0)(iii)(1,oo)(iv)(0,oo)

The function f(x)=1/(1+x^2) is decreasing in the interval (i) (-infty,-1) (ii) (-infty,0) (iii) (1,infty) (iv) (0,infty)

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

The function x^(100)+sin x-1 is decreasing in the interval:

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

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

The function y=x/(1+x^2) decreases in the interval

The function f(x) = x^(2) - 2 x is strictly decreasing in the interval