Yes it is an amazing poem and piece of writing work actually
The word "precursor" means "preceding requirement". This means that before a student is able to take courses in Calculus, it is required that the passed all the requirements for his Algebra. Calculus is a course which involves the study on derivatives and integrals.
I just read a summary of Chapter 10 in The Fellowship of the Ring, .
I think Strider <span> offered to share what he knows with Frodo and give him advice so that Frodo and his friends will accept Strider as their guide.
His exact words to Frodo were:
</span><span>'Don't be alarmed!... I will tell you what I know, and give you some good advice — but I shall want a reward.'</span><span>
'Just this: you must take me along with you, until I wish to leave you.'
</span><span>
Later on in their conversation, it was revealed that Strider was actually Aragorn and he was a close friend to Gandalf.
</span>
The answer should be : "the style".
Hope this helps !
Photon
