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F(x)=|2 Sgn 2x| +2 is discontinuous at a.)0 b.)1 c.)-1 d.)none of these

F(x)=|2 Sgn 2x| +2 is discontinuous at


a.)0                                             b.)1


c.)-1                                             d.)none of these


 

Grade:12

1 Answers

Chetan Mandayam Nayakar
312 Points
11 years ago

sgn(x)=1 for x>0,-1 forx<0, 0 for x=0

|2 Sgn 2x| +2 =4 for x>0, 4 for x<0 and 2 for x=0, and is obviously continuous for every other value of 'x', therefore f(x) is discontinuous at x=0

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