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# Differentiation watch

1. How do I differentiate this with respect to n??

thanks for the help in advance.
2. 1+1=2 , hope this helps
3. hilarious

4. i'm probably wrong but if i'm not that should be easier
How do I differentiate this with respect to n??

thanks for the help in advance.
Is a constant or a variable?
6. (Original post by Kolya)
Is a constant or a variable?
It is variable. That is what stumped me.
How do I differentiate this with respect to n??

thanks for the help in advance.
a^r and b^r are constants...now say , using what I have told you plus a bit of implicit differentiation, you should get your answer...oh and here's a hint to get you started; using natural logs (ln) is a good way to start
8. EDIT; if r is a variable then what I have said does not hold true...unless you want to partially differentiate it
It is variable. That is what stumped me.
So product rule to begin with, and then apply the quotient rule to b^(n-r).
10. (Original post by Kolya)
So product rule to begin with, and then apply the quotient rule to b^(n-r).
thank you

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