Show that the Signum function `f:R->R`, given by `f(x)={(1,xgt0),(0,x=0),(-1,xlt0))` is neither one-one nor onto

Show that the Signum function f:R rarr R , given by f(x)={[1,x>00,x=0-1,x<0]) is neither one-one nor onto

Show that the signum function f:RR, given by f(x) = {{:(1,"if" x gt0),(0, "if" x=0),(-1, "if" x lt 0):} is neither one -one nor onto.

Show the signum function f:RrarrR given by f(x)={(1" if "xgt0),(0" if "x=0 " is"),(-1" if " xlt0):} neither one-one nor onto

Show that the Signum Function f:RrarrR , given by : f(x)={{:("1, if "xgt0),("0, if "x=0),("-1, if "xlt0):} is neither one-one nor onto.

Show that the signum function f : R to R given by f(x) = {(1, if, x gt 0),(0, if, x = 0),(-1, if, x lt 0):} is neither one-one nor onto.

Show that the Signum Function f: R to R, given by f (x) ={{:(1, if x gt 0), ( 0, if x =0),(-1, if x lt0):} is neither one-one nor onto.

Show that the signum function f : R rarr R given by f(x)= {(1,if x gt 0), (0, if x = 0), (-1, if x lt 0) :} is neither one-one nor onto.

Show that the signum function f : R to R given by: f(x) = {{:(1, if x gt 0),(0, if x =0),(-1, if x lt 0):} is neither one-one nor onto.

Show that the Signum Function f:RrarrR given by f(x) = {(1,,if x>0,,),(0,,if x=0,,),(-1,,if x<0,,):} , is neither one-one nor onto.

Show that the Signum Function f : R rarr R given by f(x) = {(1," if " x gt0),(0," if " x =0),(-1," if " x lt0):} is neither one - one nor onto.