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If phi(x)=log5(log3x),then phi'(e)=...

If `phi(x)=log_5(log_3x)`,then `phi'(e)=`

A

1

B

`1/elog_5e`

C

`log_5e`

D

`elog_e5`

Text Solution

Verified by Experts

The correct Answer is:
B
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