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# Partial differentiation q watch

1. Where it says to find r_x and theta_x .etc, how do we know which variables the final answer wpuld have to be in terms of?

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2. (Original post by cooldudeman)
Where it says to find r_x and theta_x .etc, how do we know which variables the final answer wpuld have to be in terms of?

Posted from TSR Mobile
There is an index relating to the variable (e.g '_x' at r_x or theta_x)
3. (Original post by cooldudeman)
Where it says to find r_x and theta_x .etc, how do we know which variables the final answer wpuld have to be in terms of?

Posted from TSR Mobile
whatever the question is asking or whatever is the best for what you are trying to do

I would give them in terms of r and θ which gives nicer expressions

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