{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

1825_Sept29_notes_part1

# 1825_Sept29_notes_part1 - MTH1825sec.006...

This preview shows pages 1–3. Sign up to view the full content.

MTH 1825 sec. 006 Wednesday, Sept. 29, 2010 Page 1 of 7 Section 2.6 – Introduction to Functions Definition of a function: Given a relation in x and y , we say “ y is a function of x ” if _______________________________________ ________________________________________________________________________________________________________ This definition means that if two ordered pairs have the same first coordinates and different second coordinates, then ________________________________________________________________ Example: Determine whether each of the following relations is a function: a. 3, 7 ( ) , 2, 7 ( ) , 5, 7 ( ) , 4, 7 ( ) { } b. 6,1 ( ) , 5, 3 ( ) , 7, 8 ( ) , 5, 2 ( ) { } c. d. 3 4 7 5 1 2 6 2 9 3 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
MTH 1825 sec. 006 Wednesday, Sept. 29, 2010 Page 2 of 7 Vertical Line Test Consider a relation defined by a set of points ( x , y ) in a rectangular coordinate system. The graph defines y as a function of x if _______________________________________________________________ _______________________________________________________________________________________________________ Example: Determine if each of the following relations define y as a function of x . Function Notation Consider the equation y = x + 3. This is the set of all ordered pairs such that the y‐value is 3 more than the x‐value. We can define this relationship as the function f ( x ) = x + 3 where f is the name of the function, x is the input value from the domain of the function, and f ( x )
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

1825_Sept29_notes_part1 - MTH1825sec.006...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online