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# Why is this wrong? C3 Differentiation.

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1. Differentiating ln(1/3x)

Compare the two workings, the 1st one is correct, the 2nd one is wrong. but Why?

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Differentiating ln(1/3x)

Compare the two workings, the 1st one is correct, the 2nd one is wrong. but Why?
Spoiler:
Show

3. (Original post by aymanzayedmannan)
Alright, thank you... can be quite tempting to write it as (3x)^-1
Alright, thank you... can be quite tempting to write it as (3x)^-1
can be written as but .

Remember than constants are unchanged when differentiating (or integrating) linear functions.
5. (Original post by aymanzayedmannan)
can be written as but .

Remember than constants are unchanged when differentiating (or integrating) linear functions.
Thanks once again.

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