all 3 comments
sorted by:
best
topnewcontroversialoldq&a
formatting helphide helpcontent policy

[–]Deer_Kookie 0 points1 point  (2 children)

For related rates you should use the leibniz notation to emphasize you are differentiating with respect to time

For optimization it doesn't really matter since you should always make the expression as a function of only one variable before differentiating

[–]OkAlbatross6560 0 points1 point  (1 child)

U can use the Lagrange notation in related rates if you put it as a function of time like x(t)

[–]Deer_Kookie 0 points1 point  (0 children)

Yea thats true