Curve Sketching (1 Viewer)

[HeroicPandas]

Has anyone heard of a method called "Sign of dy/dx" to find the nature of stationary points then it goes into the y-dash table (learnt at truongs)

How come its not accepted in some schools...?

 

[zeebobDD]

it should be accepted, and your choice on whether you find the second derivative or table values should depend on the function