The graph shows the function ?(?) f ( x ) . Which of the following statements about ?(?) f ( x ) is false?
a.?(−?/2)f(−π/2) and ?(?/2)f(π/2) are both equal to 1
b.
?f is discontinuous at both −?/2−π/2 and ?/2π/2
c.
The one-sided limits of ?f at ?=−?/2x=−π/2 are both defined
d.
Whenever a 2-sided limit for ?x between −?−π and ?π is defined, it is equal to ?(?)