Let `f(x) = (sin (pi [ x + pi]))/(1+[x]^(2))` where [] denotes the greatest integer function then f(x) is

Let f(x)=[|x|] where [.] denotes the greatest integer function, then f'(-1) is

Let f(x)=(-1)^([x]) where [.] denotes the greatest integer function),then

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

If f(x)=e^(sin(x-[x])cospix) , where [x] denotes the greatest integer function, then f(x) is

" If "f(x)=(tax([x]pi))/([1+|ln(sin^(2)x+1)|])," where [.] denotes the greatest integer function,then "f(x)" is "

f(x)=2^(cos^(4)pi x+x-[x]+cos^(2)pi x), where [.] denotes the greatest integer function.