Given a function f(x) and its derivative f'(x)... whats that mean? What's a derivative?
What kind of maths is x axis's and line tangents?

Question

anonymous · Answer

haven't you ever heard of calculus?

anonymous · Answer

been a long time...

anonymous · Answer

so I need to study up on calculus then if I want to understand this thing about Newtons method?

anonymous · Answer

Derivative is $$dy/dx$$

anonymous · Answer

thankyou for the formula, but actually don't know what it is, what does it mean?

anonymous · Answer

it is differentiation of a function with respect to a variable.

anonymous · Answer

Eg 
Y=f(x)=2x
Dy/dx=f'(x)=2

anonymous · Answer

you can open the following link and will find a pdf on introductory differrential calculus. you can study it. http://sydney.edu.au/stuserv/documents/maths_learning_centre/differentialcalculus.pdf

anonymous · Answer

Sweet thankyou very much all! It is clear I need to go back and learn it again, I've really forgotten it all...