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The period of `f(x)=[x]+[2x]+[3x]+[4x]+[n x]-(n(n+1))/2x ,`where `n in N ,`is (where `[dot]`represents greatest integer function).`n`(b) 1(c) `1/n`(d) none of theseA. nB. 1C. `(1)/(n)`D. none of these |
Answer» Correct Answer - B `f(x)=[x]+[2x]+[3x]+ …+[nx] -(x+2x+3x+ … + nx)` `= -({x}+{2x}+{3x}+ … +{nx})` Period of `f(x)=LCM (1,(1)/(2),(1)/(3), …, (1)/(n))=1.` |
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