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 Find the points of discontinuity of the following functions.

\mathrm{f(x)=[[x]]-[x-I]}, where [ ] denotes G.I.F. and I is any integer.

Option: 1

\mathrm{f(x)} is not continuous for real number.
 


Option: 2

\mathrm{f(x)} is only continuous at x=1
 


Option: 3

\mathrm{f(x)}  is defined everywhere.
 


Option: 4

 NOTA


Answers (1)

best_answer

\begin{aligned} \mathrm{f(x) }& =\mathrm{[[x]]-[x-I] }\\ &\mathrm{ =[x]-[x-I]=[x]-[x]+I=I} \end{aligned}
Thas, f(x) is defined everywhere.

Posted by

Pankaj Sanodiya

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