If \[{{l}^{r}}(x)\] means log log log ??.x, the log being repeated r times. then \[\int{\{xl(x){{l}^{2}}(x){{l}^{3}}(x)....{{l}^{r}}(x)\}{{-}^{1}}dx}\] is equal to

\[\frac{{{l}^{r+1}}(x)}{r+1}+C\]

If \[{{l}^{r}}(x)\] means log log log ??.x, the log being repeated r t

1.	If \[{{l}^{r}}(x)\] means log log log ??.x, the log being repeated r times. then \[\int{\{xl(x){{l}^{2}}(x){{l}^{3}}(x)....{{l}^{r}}(x)\}{{-}^{1}}dx}\] is equal to
A.	\[{{l}^{r+1}}(x)+C\]
B.	\[\frac{{{l}^{r+1}}(x)}{r+1}+C\]
C.	\[{{l}^{r}}(x)+C\]
D.	None
Answer» B. \[\frac{{{l}^{r+1}}(x)}{r+1}+C\]

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If \[{{l}^{r}}(x)\] means log log log ??.x, the log being repeated r times. then \[\int{\{xl(x){{l}^{2}}(x){{l}^{3}}(x)....{{l}^{r}}(x)\}{{-}^{1}}dx}\] is equal to

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