For `x != npi/2` function f(x) = where n e I, the range of sgn(sin x) + sgn(cos x)+ sgn(tan x)+ sgn(cot x) is equal to

Let sgn (x) denote the signum function of x. Let A = {x|x ne 1/2npi, n in Z} Define f : A to R by f(x) = sgn(cos x) + sgn (sinx) + sgn (tan x) + sgn (cot x) Then range of f is

If f(x) = sgn (cos x) , then f^(1)(pi/2) is

Find the range of f(x)=sgn(x^(2)-2x+3)

Find the range of f(x)=sgn(x^2-2x+3)

Draw the graph of f(x) = sgn (x -2).

Draw the graph of f(x) = sgn (x - 2) .

If f(x) = x^(3) sgn (x), then

If f(x) = x^(3) sgn (x), then

If f(x)=sgn(cos x) then f'((pi)/(2)) is