Hi all, I remembered there was one lecture that one student asked is y'' the same as (y')^2?
Can somebody tell me what lecture it was? Also, that turns out to be a pretty interesting diff. eq equation although it is not always true, BUT it is true for some function!!! =)

Question

Hi all, I remembered there was one lecture that one student asked is y'' the same as (y')^2? 
Can somebody tell me what lecture it was? Also, that turns out to be a pretty interesting diff. eq equation although it is not always true, BUT it is true for some function!!! =)

anonymous · Answer

It's in lecture 31 of 18.01 (Parametric Equations) at 7 minutes 15 seconds.