Help please!

1. First, study the materials in this week's lesson. 2. The limit of a function y=f(x) at x-a is sometimes best understood as the approximate height of the function around x=a based on the values around x=a whereas the value of the function fat x=a is the exact height of the function at that point. Consider two functions 1) f(x)=x+1 and g(x)=(x~2- 1)/(x-1). Answer the following questions. (a) Discuss the process of finding the limit x->1 f(x). (b) How does it differ from f(1)