Exam Information
Material Type:  Final 
Professor:  Staff 
Class:  MTH 119  PreCalculus I 
Subject:  Mathematics 
University:  Essex County College 
Term:  Spring 2005 
Keywords:   Matrix Equation
 Coefficient Matrix
 Final Answers
 Exact Solution
 Row Operations
 You Have...
 Decimal Places
 Augmented Matrix
 Inverse Function
 Mathematics

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Sample Document Text
MTH 119  Spring  2005
Essex County College  Division of Mathematics
Final Exam1  Created April 19, 2005
Name:
Signature:
Show all work clearly and in order, and box your final answers. Justify your answers alge
braically whenever possible. You have at most 80 minutes to take this 100 point exam. No
cellular phones allowed.
10 points
1. Find the inverse function, f?1 (x), of
f (x) = 5?3x7 .
10 points
2. For f (x) = 3x2 ?2x + 5, construct and simplify the difference quotient
f (x + h)? f (x)
h , h negationslash= 0.
1
4 points
3. Solve log7 149 = x, for x.
4 points
4. Use your calculator to evaluate 13.59· e0.13·(50) accurate to two decimal places.
6 points
5. Find the horizontal asymptote of the graph of f (x) = 3x
2 + x ?2
5x2 ? x ?6.
6 points
6. Find the vertical asymptote of the graph of f (x) = 3x
2 + x ?2
5x2 ? x ?6.
1This document was prepared by Ron Bannon using LATEX2?.
2
15 points7. Solve by using an augmented matrix and elementary row operations, or by using a matrix...
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