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If l^(prime)(x) means logloglog x , the ...

If `l^(prime)(x)` means `logloglog x ,` the `log` being repeated `r` times, then `int[x l(x)l^2(x)l^3(x) l^(prime)(x)]^(-1)d s` is equal to `l^(r+1)(x)+C` (b) `(l^(r+1)(x))/(r+1)+C` `l^r(x)+C` (d) none of these

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