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# Some basic partial differentiation watch

2. I've not been taught partial differentiation properly but you treat the other variables as constants right?
Then use the chain rule to get

Works similarly for df/dy.
3. (Original post by vector)

You may find it easier to write

4. (Original post by benwellsday)
I've not been taught partial differentiation properly but you treat the other variables as constants right?
Then use the chain rule to get

Works similarly for df/dy.
erm d/dx [f(x)] = f'(x)/f(x)

So
5. (Original post by EierVonSatan)
erm d/dx [f(x)] = f'(x)/f(x)

So
Which is what I got, but I tried not to give the answer away!
I probably didn't write it out in a great way but I meant do
6. (Original post by benwellsday)
Which is what I got, but I tried not to give the answer away!
I probably didn't write it out in a great way but I meant do
lol ahh I see I misread, sorry

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