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Why do we need these components?

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gjoo

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Why do we need 10 ohm resistors R6 and R7, I've never seen them used in similar situations. Also, C10 22uf capacitor, why is it there , when the datasheet calls for a 22 uf capacitor on the output only? Lastly, is c11 1 uf necessary , it seems that's it is not large enough to make a difference, since you have .1uf already there?
 

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R6 and R7 aren't required, but do no harm - probably just a personal preference of the designer?. C10 seems fine, it's a supply decoupler and reservoir capacitor. Likewise C11, it makes sense to have an electrolytic (for lower frequency decoupling), and a smaller non-electrolytic for higher frequency decoupling.

But again, it's all personal preference - the paired decouplers are mostly there for 'good practice', in reality they not make the slightest bit of difference.
 
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