The range of the function `f(x)=cos[x],-pi/4ltxltpi /4` where `[x]` denotes the greatest integer

The range of the function f(x)=cos[x] , -pi//4 lt x lt pi//4 , where [x] denotes the greatest integer lex , is :

The range of the function y=f(x)=sin[x],-(pi)/(4)

The range of the function: f(x) = tan^(-1)[x], -pi/4 le x le pi/4 where [.] denotes the greatest integer function:

The range of the function f(x) = sin [x], -(x)/(4) lt x lt (x)/(4) where [x] denotes the greatest integer le x , is

The range of the function f(x)=(sin(pi[x^(2)+1]))/(x^(4)+1), where [.] denotes the greatest integer function,is

The range of the function f(x) =[sinx+cosx] (where [x] denotes the greatest integer function) is f(x) in :

The range of the function f(x) =[sinx+cosx] (where [x] denotes the greatest integer function) is f(x) in :

The range of the function f(x)=[sinx+cosx] (where [x] denotes the greatest integer function) is

The range of the function f(x)=cosec^(-1)[sinx] " in " [0,2pi] , where [*] denotes the greatest integer function , is