In 67 80, determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio. If the sequence is arithmetic or geometric, find the sum of the first 50 terms.

August 18 2016 Lecture 1, syllabus, and 2.1 notes Basic question: what happens to f(x) and x approaches a f(a) Example: As x approaches 3 f(x) (y) approaches what Limit in this case is 2 because as you go along both sides of the line the closer to x=3 the line gets the closer to 2=y the line gets. Thus the limit is 2. A limit is how a function f behaves as it approaches a certain point.