Help me handwritten with full explanation as askeddd pls ill rate

Should I include endpoints as discontinuous points? When should I include them and when should I not? X + "Tazon.com/15 zy m: cas/bif micsbirdmaking . .. papergrid Date: / 1 on f (2) = a 2 6 [ 1, 3], find the no : of points of discontinuity . int values of 2 2 -. 1 2 , 3 4 , 5 , 6 , 7 8 9 endput end pot Nor: of points of dicontinuity 7 or 9 2