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Grade 11Differential Calculus

The set of all points of continuous of f o f o f , where f ( x ) = sgn ( x ) is

Profile image of Roshan
8 Years agoGrade 11
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1 Answer

Profile image of Tushar
8 Years ago
Hello friend .. I am assuming that you know about sgn function.. Now we consider f°f°f as F(x).. Now if x is positive sgn returns 1 hence F(x) is 1 for x>0 .. For zero it is zero.. For x