# Thread: question on notation for partial derivatives

1. ## question on notation for partial derivatives

what does it mean when a partial derivative has a prime on it? usually i just see partial derivatives as f and a subscript x but i recently came across f with a subscript x and a prime on the top. just curious, what does that mean?

2. Originally Posted by oblixps
what does it mean when a partial derivative has a prime on it? usually i just see partial derivatives as f and a subscript x but i recently came across f with a subscript x and a prime on the top. just curious, what does that mean?
Do you mean like this $f'_x$

?

Do you mean like this $f'_x$
yes, sorry if my description was confusing. can you tell me what $f'_x$ means?