Hi guys im new to the forum got here linked by an UK friend, im having this problem atm, im not understand what they are asking me to do in the questions, maybe i post an example here:

For the functions given by the fallowing expressions, determine the natural domains, the derivatives, and the domains of the latter.

example: 1/ x * sqr x^2 + 1

thx in advance

i hope this is right section.