Applications of calc to physical world (1 Viewer)

[wandering17]

This topic i don't do so well in, but i feel like its just because i can't grasp the concepts, no matter how much i try and read and understand, so i find it struggling to understand what the questions are asking me.
Need advice how to tackle this topic specifically

 

[astroman]

Practice.

 

[Drsoccerball]

This topic i don't do so well in, but i feel like its just because i can't grasp the concepts, no matter how much i try and read and understand, so i find it struggling to understand what the questions are asking me.
Need advice how to tackle this topic specifically

Things you need to do :
Test stationary points.