Posted by **jessica** on Wednesday, June 13, 2007 at 2:31am.

In my Algebra class I am working with rational expression. I know it is important to understand the differnce between a factor and a term of an expression. Can someone give me the definition for both and explain to me the difference between the two? Thanks.

My Thomas book says integrate

ds = sqrt (dx^2 + dy^2)

= sqrt (1 + (dy/dx)^2)dx