1.

`lim(x->a_-) {(|x|^3)/a-[x/a]^3} ,(a < 0)`, where `[x]` denotes the greatest integer less than or equal to `x` is equal to:A. `a^2-3`B. `a^2-1`C. `a^2`D. none of these

Answer» Correct Answer - C
When `xtoa^-1`, we have
`0lt x lt a rArr 0lt (x)/(a)lt 1rArr [(x)/(a)] =0`
` therefore lim-(xtoa^-){|x|^3/(a)-[(x)/(a)]^3}=lim_(xtoa^-)(|x|^3)/(a)=(a^3)/(a)=a^2`


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