We can use arrow notation to describe local behavior and end behavior of the toolkit functions
and
See
[link] .
A function that levels off at a horizontal value has a horizontal asymptote. A function can have more than one vertical asymptote. See
[link] .
Application problems involving rates and concentrations often involve rational functions. See
[link] .
The domain of a rational function includes all real numbers except those that cause the denominator to equal zero. See
[link] .
The vertical asymptotes of a rational function will occur where the denominator of the function is equal to zero and the numerator is not zero. See
[link] .
A removable discontinuity might occur in the graph of a rational function if an input causes both numerator and denominator to be zero. See
[link] .
A rational function’s end behavior will mirror that of the ratio of the leading terms of the numerator and denominator functions. See
[link] ,
[link] ,
[link] , and
[link] .
Graph rational functions by finding the intercepts, behavior at the intercepts and asymptotes, and end behavior. See
[link] .
If a rational function has
x -intercepts at
vertical asymptotes at
and no
then the function can be written in the form
For the following exercises, describe the local and end behavior of the functions.
Questions & Answers
If c is the cost function for a particular product, find the marginal cost functions and their
values at x=10 a. c(x) = 800+ 0.04x + 0.0002x² b. c(x) = 250 + 100x + 0.001x²
when you reduce an equation to its simplest terms, you can't change the value of the equation. reducing it to y + 5 is equivalent to dividing it by 9 which changes the value. you can multiply it by 1 or 9/9 which would give 9(y + 5). multiplying it by one does not change the value.
Philip
Given a polynomial expression, factor out the greatest common factor.
The denominator of a certain fraction is 9 more than the numerator. If 6 is added to both terms of the
fraction, the value of the fraction becomes 2/3. Find the original fraction.
2. The sum of the least and greatest of 3 consecutive integers is 60. What are the valu
Q2
x+(x+2)+(x+4)=60
3x+6=60
3x+6-6=60-6
3x=54
3x/3=54/3
x=18
:. The numbers are 18,20 and 22
Naagmenkoma
Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 1 more than 3 times the number of marbles Mark has, how many does each boy have to sell if the total number of marbles is 113?