Lists and Fitting multiple lines to data

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Lists and Fitting multiple lines to data*From*: richard at alaska.et.byu.edu (Richard B. Christensen)*Date*: Fri, 12 Mar 93 16:13:46 -0700

I am having a difficult time dealing with lists. I have a list of data : {{1,2},{2,3},{4,5}} I want to do some operations on the second column only. Such as +1, Sin[], etc to each element in the second column. I admit I only have a rudimentary knowledge of Map, Apply, Transpose, and Flatten. Any help would be appreciated. Also, I have data that needs several fitting equations. One will be Exp[a x -b], another Exp[-c x+d], and the last would be a polynomial. Then I would like to Plot the data and fitting equations in there respective regions at the same time. I have seen something like this before, but I can't remember where. Thanks Richard