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# [FP2] Differentiation help watch

1. Not sure how to do part A. Pretty confused. Anyhelp would be great.
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2. did you actually name yourself after this question? That's commitment
3. (Original post by Maths help pls)
Not sure how to do part A. Pretty confused. Anyhelp would be great.
differentiation using the chain rule
(or notice something special about that log depending on what board you are on)
4. (Original post by jlsmpV2)
did you actually name yourself after this question? That's commitment
Yep!
(Original post by TeeEm)
differentiation using the chain rule
(or notice something special about that log depending on what board you are on)
It is dumb of me but thats what I am confused about, I am not sure what to split it into . My brain is dead today.
5. (Original post by Maths help pls)
Yep!

It is dumb of me but thats what I am confused about, I am not sure what to split it into . My brain is dead today.
there is nothing to split

either you use the chain rule (pretty standard )

or

you notice that this is nothing but arsinh(x)
6. (Original post by TeeEm)
there is nothing to split

either you use the chain rule (pretty standard )

or

you notice that this is nothing but arsinh(x)
See i told you my brain is dead. I was thinking of chain rule as the product rule
7. (Original post by Maths help pls)
See i told you my brain is dead. I was thinking of chain rule as the product rule
hopefully you can now do it
8. (Original post by TeeEm)
hopefully you can now do it
Yep. It's weird, sometimes I just get these mental blocks where I literally cannot do anything even if I know it. This would have taken me max 2-3 mins (part A) if I was really paying attention but took me an hour or two to do it. Just not my day today
9. (Original post by Maths help pls)
Yep. It's weird, sometimes I just get these mental blocks where I literally cannot do anything even if I know it. This would have taken me max 2-3 mins (part A) if I was really paying attention but took me an hour or two to do it. Just not my day today
it happens ...
10. (Original post by Maths help pls)
Not sure how to do part A. Pretty confused. Anyhelp would be great.
Think about how Arsinh and Arcosh can be written in terms of natural logs.

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