Hi all,

I have four differential equations which I have attached as an expandable thumbnail.

I want to classify them as either linear or non linear and as either initial or boundary value problems, and then state the order of each equation, and I really have no idea what things I am looking out for to do this!

Iv never really encountered differential equations before, but im guessing that linear vs non linear is just whether there is a power higher than one for the variable or not?

And that the order of the equation is just whether we use 1st, 2nd or 3rd derivative etc?

Initial or boundary value problems im not sure about?

Thanks!