SparkNotes: Free Study Guides No Fear Shakespeare: The Bard made easy SparkCharts: Just the facts TestPrep: SAT, ACT, and more 101s: College texts condensed Subject Finder: Browse by subject SparkCollege: Get in! SparkLife: 100% study-free home_bottom home_top BN_link
 
◄ PREVIOUS
Multiplication and Composition of Functions
NEXT ►
Inverse Functions
 

Operations with Functions

 
 

Problems

 
Problem 2.1: If f (x) = x2 + 3x + 2 and g(x) = 5x + 3, what is the value of:
a) 3f (1)?
b) 3f (x)?
c) g(x)?
d) 2f (x) + 3g(x)?
e) 5f (x) - 3g(x)?
 
Problem 2.2: If f (x) = 3x - 2 and g(x) = , what is the value of:
a) 2f (x) + 4g(x)?
b) 3f (x) - g(x)?
c) fg(x)?
 
Problem 2.3: If f (x) = 2x - 1, g(x) = 3x + 4, and h(x) = 4x, what is the value of:
a) fg(x)?
b) fh(x)?
c) gh(x)?
 
Problem 2.4: If f (x) = x2 - 2 and g(x) = 2x + 1, what is the value of:
a) (f + g)(x)?
b) fg(x)?
c) fog(x)?
d) gof (x)?
 
Problem 2.5: If f (x) = (x - 1)2 and g(x) = 4, what is the value of:
a) (f - g)(x)?
b) fg(x)?
c) fog(x)?
d) gof (x)?
 
Problem 2.6: If f (x) = x2 - 6 and g(x) = 3x + 7, what is the value of:
a) (f + g)(x)?
b) fg(x)?
c) fog(x)?
d) gof (x).
 
 
Help | Feedback | Make a request | Report an error | Send to a friend

◄ PREVIOUS
Multiplication and Composition of Functions
NEXT ►
Inverse Functions
 
 
 
 
 
 
 
Test Prep Books
Take the next step in test prep.
  • SAT Subject Test: Math Level 1
  • SAT Subject Test: Math Level 2
  •  
    Test Prep Centers
    Take a practice exam. Do better.
  • SAT Subject Test: Math Level 1 Test Center
  • SAT Subject Test: Math Level 2 Test Center
  •  
    SparkCharts
    A textbook's worth of information on an easy-to-read chart.
  • Math Basics
  • Algebra II
  •  
     
     
    Contact Us | Privacy Policy | Terms and Conditions | About | Sitemap
    ©2008 SparkNotes LLC, All Rights Reserved.