1.

`lim_(xto0^(+)) (sum_(r=1)^(2n+1)[x^(r)]+(n+1))/(1+[x]+|x|+2x),` where `ninN` and `[.]` denotes the greatest integer function, equals

Answer» Correct Answer - C
`underset(xto0^(-))lim(sum_(r=1)^(2n+1)[x^(r)]+(n+1))/(1+[x]+|x|+2x)=underset(xto0^(-))lim(sum_(r=1)^(2n+1)[x^(r)]+(n+1))/(x)`
`=underset(xto0^(-))lim([x]+[x^(2)]+[x^(3)]+...+[x^(2n+1)]+(n+1))/(x)`
`=underset(xto0^(-))lim(ubrace((-1)+(-1)+...+(-1))_((n+1)"times")+(n+1))/(x)=underset(xto0^(-))lim(0)/(x)=0`


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