Number of results: 188,697
Calculus
We're learning about different kinds of functions and I don't really understand the difference between rational and algebraic functions. I know that rational functions are functions that are a ratio of two polynomials, and algebraic functions are any functions that can...
Thursday, September 13, 2007 at 11:09am by Kelly
MATH _ GRAPHING RATIONAL FUNCTIONS
When graphing rational functions, how do I know which directions the graphs go? Example, for equation y = 9/x - x, how would you graph this? Also, why is the horizontal asymptote for f(x)= 2+x / x-7 is 1 instead of 0?
Sunday, October 14, 2007 at 11:30am by Anonymous
Math- Rational Functions
1. Some rational functions have asymptotes, others have holes, and some have both. Explain how you can identify, without graphing, which graphical features a rational function will have. Can someone explain this thoroughly ? I don't understand. thanks in advance.
Sunday, October 5, 2008 at 8:31pm by Mae
statistical research
You posted this question more than once. Look for my answer elsewhere. Your data refers to FATAL accidents, not ANY accident. You will also find the problem worked out at: http://www.algebra.com/algebra/homework/Rational-functions/Rational-functions.faq.question.125800.html
Monday, September 8, 2008 at 9:41pm by drwls
math algebra 1
http://www.algebra.com/algebra/homework/Rational-functions/Rational-functions.faq.question.210586.html
Wednesday, October 5, 2011 at 10:01pm by Ms. Sue
math
hello, i have some question about rational functions. 1) are there any sites that are good in teaching graphing rational functions? 2) for the domain of the rational function it is what the denominator cannot equal to rite? for example the denominator of x^2-7x+10 can be ...
Tuesday, October 23, 2007 at 7:53pm by julie
Gr.11 - Rational functions graphing.
1. Identify a rational function whose graph is a horizontal line except for two holes. Graph the function. 2. Identify a rational function who graph lies entirely above the x-axis and has a single vertical asymptote. Graph the function. 3. Identify a rational function who ...
Monday, October 6, 2008 at 1:04am by Mae
calculus: Rational Functions
I do not understand how to complete rational functions: ie: As x (arrow) -3, f(x) (arrow) ?. Our book sucks and our instructor is little help. Thank you.
Tuesday, April 1, 2008 at 9:00pm by Pam
Math
For the given functions, write the rational function, r(x) = [f(x-h)-f(x)]/h and simplify: a. F(x) = 2x+3 b. F(x) = 1/(x+1) c. F(x) = x^2 --- Just need to know that the rational function is and maybe I can do the questions. Thanks.
Tuesday, February 9, 2010 at 9:24pm by Anonymous
Math Rational Functions-Please Clarify =)
I have a question about the rational function I recently posted. Would the range still be (-∞,2)U(2,∞) if the rational function is what Reiny posted "(2x^2-18)/(x^2+3x-10)." The y-intercept confuses me because its (0,1.8) and when I look at the ...
Monday, October 15, 2012 at 9:02pm by Enlia
Math advance functions gr 12
Using rational functions solve 7+ 1(numerator) x (denominator) = 1 (numerator) x-2(demominator)
Monday, April 1, 2013 at 6:15pm by alex
Math Rational Functions
for rational functions, y = p(x)/q(x), the domain is all reals except where q(x) = 0 So, here that would be all reals except where (x+5)(x-2) = 0 since there is a horizontal asymptote at y=2, and the graph does not cfross the asymptote, the range would be all reals except y=2 ...
Monday, October 15, 2012 at 12:32pm by Steve
advance functions gr12 HELP ASAP
Using rational functions solve 7+ (1)/x = 1/(x-2) thank you
Tuesday, April 2, 2013 at 1:10pm by james
advance functions gr12
Using rational functions solve (7+ 1)/x = 1/(x-2)
Tuesday, April 2, 2013 at 11:24am by james
advance functions gr12 HELP ASAP
using rational functions solve (x+5)/(x-3)= (2x+7)/(x) thank you
Tuesday, April 2, 2013 at 11:28am by ALEX
advance functions gr12 (SORRY LAST ONE HAD A TYPO)
Using rational functions solve 7+ (1)/x = 1/(x-2)
Tuesday, April 2, 2013 at 11:43am by james
Algebra
Graph and label the following two functions: f(x)=(x^2+7x+12)/(x+4) g(x)=(-x^2+3x+9)/(x-1) 1. Describe the domain and range for each of these functions. 2. Determine the equation(s) of any asymptotes found in the graphs of these functions, showing all work. 3. Discuss the ...
Monday, May 2, 2011 at 11:22am by Debra
Math
Use your knowledge of exponents to solve. a) 1/2^x=1/(x+2) b) 1/2^x>1/x^2 So I know that these functions are rational functions.. and I am trying to solve for x. I tried to solve them by I keep getting stuck with the exponent 2 which is the exponential function.. Help ...
Sunday, June 7, 2009 at 5:13pm by Halle
Pre-Calculus
Rational Functions y = (x^2+7x-4)/(x-2) Since the degrees of both the numerator and denominator are the same, I would use the leading coefficient, and both the rational functions start with 1, so would the horizontal asymptote be 1? Also dont get how to find the horizontal ...
Tuesday, October 2, 2012 at 7:27pm by Shreya
advance functions gr 12
Using rational functions solve 7+ 1(numerator) x (denominator) = 1 (numerator) x-2(demominator)
Tuesday, April 2, 2013 at 7:38am by james
advance functions gr 12
Using rational functions solve x+5(numerator) x-3 (denominator) = 2x+7 (numerator) x(demominator)
Monday, April 1, 2013 at 6:13pm by Fadak
advance functions gr 12
Using rational functions solve x+5(numerator) x-3 (denominator) = 2x+7 (numerator) x(demominator)
Monday, April 1, 2013 at 6:11pm by Fadak
Math Rational Functions-Please Clarify =)
Yes it does ^^
Monday, October 15, 2012 at 9:02pm by Enlia
advance functions gr 12
Using rational functions solve 3(numerator) 2x-4 (denominator) < (with a "-" underneath) 4 (numerator) x-2(demominator)
Monday, April 1, 2013 at 6:16pm by james
rational functions... PLEASE HELPPPPP
A rational function that passes through (0,0) and (4, 8/7) has the x-axis as a horiztonal asympotote. It also has 2 vertical asymptotes x=3, x=-3. I understand that to set it up, it is y= ax+b / (x+3)(x-3). I dont understand how to solve for a and b.
Saturday, January 27, 2007 at 6:46pm by luke
Math - Simple rational functions (check)
3(x^2-x-6)/4(x^2-9) what is the domain?
Friday, October 29, 2010 at 6:25am by Valencia
Math Rational Functions-Please Clarify =)
Thank you very much!
Monday, October 15, 2012 at 9:02pm by Enlia
Math rational exponents
what is the domain of these functions? y= -1/5x^(-1/3) and y=10x^ (-1/6)
Sunday, November 14, 2010 at 8:31pm by Charm
Math- Rational Functions
how would we know if it has both holes and asymptotes?
Sunday, October 5, 2008 at 8:31pm by Mae
Math Rational Functions-Please Clarify =)
you are welcome, does it make sense now?
Monday, October 15, 2012 at 9:02pm by Reiny
****college algebra…radical functions****
Create a rational function such that the graph of has vertical asymptotes at x=5 and x= -7, a hole at x=2 , and a horizontal asymptote at y = 14. By creating a rational function, you are to write rule for this function. There are many correct solutions here.
Sunday, October 16, 2011 at 11:01pm by Brianna
Math Rational Functions
What is the domain and range of 2x^2-18/x^2+3x-10
Monday, October 15, 2012 at 12:32pm by Enlia
Math- Rational Functions
What is the domain and range of 2x^2-18/x^2+3x-10
Sunday, October 5, 2008 at 8:31pm by Enlia
Math-Rational #'s
Just trying to understand this. Please let me know if I did these right. Thanks!!! -7 as a rational # = -7/10 -3.03 as a rational # = -33/10 -2 3/12 as a rational # = -25/12 1.03 as a rational # = 13/10
Monday, March 15, 2010 at 8:52pm by Kate
Math (calc)
Given the function: f(x)=x^3(x-2)^2 , on the interval [-1,3] find the domain and Asymptotes ...Isn't the domain (-1<x<3) ? and as for the asymptotes I thought you could only find them for rational functions and since that function is not rational I guess ...
Saturday, November 7, 2009 at 1:03pm by Elizabeth
Math
Using the index of a series as the domain and the value of the series as the range, is a series a function? Include the following in your answer: Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic series? Which one of ...
Saturday, October 28, 2006 at 11:19pm by Vianna
Math
2-4 paragraphs plus two graphs Details: Many different kinds of data can be modeled using polynomial functions. An example of a polynomial function would be gas mileage for an automobile. If we compare gas mileage at two different speeds, V1 and V2, the gas required varies as...
Monday, January 21, 2008 at 12:07am by Nathan
math advanced functions grade 12
Find the solution set to the following rational inequality, 240/x+8 > 20x/x+1
Tuesday, July 24, 2012 at 6:25pm by illiah
Functions
what is the oblique asymptote of this rational function: (x ^ 3) / (x ^ 2+1)
Thursday, April 18, 2013 at 5:15pm by Lg
Algebra
Using the index of a series as the domain and the value of the series as the range, is a series a function? Include the following in your answer: Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic series? Which one of ...
Sunday, October 29, 2006 at 11:19am by V
Algebra II
Give the equations of any vertical asymptotes for the graphs of the rational functions. f(x)=(x-4)/(x²+7)
Thursday, July 7, 2011 at 12:51pm by Matt
Algebra II
Give the equations of any vertical asymptotes for the graphs of the rational functions. f(x)=(x-4)/(x²+7)
Wednesday, July 6, 2011 at 10:55pm by Reanna
math(rational functions application)
Call the speeds j and c. j - c = 100 -> j = 100 + c (100 + c) = 5c / 4 (from the "25% faster") Solve for c.
Thursday, October 22, 2009 at 6:23pm by jim
math help me!!
No, it is not rational. sqrt(56)=sqrt(4*14)=sqrt(4*2*7) sqrt2, sqrt 7 are irrational. The only square roots that are rational are squares of rational numbers.
Wednesday, April 13, 2011 at 7:17pm by bobpursley
Math(dispute to previous question)
2)Name the sets of numbers to which 457 belongs. (answer)natural,whole,integers,rational,reals My book says that every REAL number has to be rational or irrational. Blueridge said that my answer was correct except to exclude rational from my list. From what my book says I HAVE...
Sunday, February 24, 2008 at 3:21pm by Jon
Math
not much to do except define at described. There are several functions which work with this kind of condition: Thomae's function, which is 1/q when x=p/q (rational), and 0 when x is irrational Dirichlet function is just as you describe
Thursday, September 20, 2012 at 12:08am by Steve
Math
By the way if you tried all possible rational roots results on the first problem using factors of the first and last term 3 and 4 ( 3, 2, 4) you would have found that it has no rational factors by the rational root test.
Saturday, September 8, 2012 at 8:37pm by Damon
9th grade
Name the set(s) of numbers to which 1.68 belongs. a. rational numbers b. natural numbers, whole numbers, integers, rational numbers c. rational numbers, irrational numbers d. none of the above my answer a)rational numbers
Monday, September 20, 2010 at 2:53pm by Ross
rational functions
If f(x) is a polynomial function, does 1/f(x) always have a horizontal asymptote? Explain why or why not and provide a counterexample if needed.
Saturday, May 2, 2009 at 10:23am by Anonymous
Math
I just wanted to check my answers with anyone willing to take the time. Identify all sets that -3/4 belongs to: a.whole #s, integers, rational #s b.rational #s c.integers, rational #s d.odd #s, whole #s, integers, rational #s Ithought it was C How many centimeters are equal to...
Thursday, December 14, 2006 at 7:15pm by Katie
math
HELP. Help I have to decide whether these are rational or irrational. .73737373... .61611611161111..... 1/23 Can someone explain this to me? Rational numbers are just fractions. The decimal expansion of fractions will either terminate or it will become periodic after a while. ...
Sunday, May 6, 2007 at 2:23pm by Kimberly
Math - Rational Roots
1.) What are the possible rational roots of the function f(x) = 3x^4 - x - 2 2.) What are the rational roots of the following equation: x^3 - 4x^2 - 4x +16 = 0 Thank you for any help!
Sunday, September 12, 2010 at 9:39pm by Julia
Math
Identify all sets to which the number 3 belongs A. Whole numbers, integers, rational numbers B. Rational numbers C. Integers, rational numbers D. Even numbers, whole numbers, integers, rational numbers I THINK IT'S A
Wednesday, December 12, 2012 at 4:04pm by Frances
Math
Whenever you have a rational function, vertical asymptotes are possible. A rational function is a fraction where one polynomial is divided by another. If the denominator is zero and the numerator is not zero, then you have a vertical asymptote. Consider a simple function y = 1...
Monday, October 10, 2011 at 7:59pm by Steve
math
which statement is false? A: 3.648 reapeating=is rational B:-3 2/13=rational
Friday, February 15, 2013 at 9:31pm by Taylor
Math-Rational #'s
each of the numbers you are starting with is already a rational number.
Monday, March 15, 2010 at 8:52pm by Reiny
Maaaaath
When graphing rational functions, how do I know which directions the graphs go? Example, for equation y = 9/x - x, how would you graph this? Also, why is the horizontal asymptote for f(x)= 2+x / x-7 is 1 instead of 0?
Sunday, October 14, 2007 at 9:03pm by Anonymous
math
pretty broad question. Some examples: All polynomials are differentiable. Rational functions are differentiable except where their denominator is zero All exponental functions are differentiable, as long as their epxonents are. Same for logs, where domain > 0 Things ...
Tuesday, December 13, 2011 at 8:58am by Steve
math
1) rational...notice the repeating unit 213699 2) correct 3) irrational no repeats 4)correct notice the 89 repeating, rational. If there are any repeating units in the decimal portion, it is rational.
Wednesday, September 17, 2008 at 4:52pm by bobpursley
6TH GR. ALGEBRA
EXTENDING THE LESSON If you add any two rational numbers, the sum is always a rational number. So, the set of rational numbers is closed under addition. Is the set of rational numbers closed under subtraction. multiplication,and division also? Explain.
Wednesday, December 16, 2009 at 6:32pm by Amelia
Algebra 1
rational numbers can be represented as fractions of integers 3 is rational, 15/5 is a integer fraction that represents it. irrational numbers cannot be written as a whole integer fraction, such as sqrt5 Another difference, as a decimal, rational numbers repeat, such as 1....
Thursday, September 20, 2007 at 6:07pm by bobpursley
Math - Simple rational functions (check)
what is the anwser to this input output table here it is input(x)-2,-1,0,1,2,3,here is the output(y)-1,1,3,5,7,9,
Friday, October 29, 2010 at 6:25am by shila
Math Rational Functions
The way you typed it, we are only dividing by x^2 ,so the domain is any real number, except x = 0 If you meant: (2x^2 - 18)/(x^2 + 3x - 10) = 2(x-3)(x+3)/( (x+5)(x-2) ) the domain is any real number , x ≠ 2 , -5
Monday, October 15, 2012 at 12:32pm by Reiny
MathLog#4
I think rational functions are ratios of polynomials, so forget the e^-x and just use 1/[(x+3)(x)(x-2)] or, the numerator could be any polynomial of degree less than 3. It will still approach y=0 as x gets large.
Tuesday, April 3, 2012 at 5:13pm by Steve
Calculus
Hint: Rational functions (where the denominator is a polynomial) have discontinuities when the denominator vanishes (=0). This is where we find vertical asymptotes.
Saturday, September 8, 2012 at 12:38pm by MathMate
Algebra II
Give the equations of any vertical asymptotes for the graphs of the rational functions. f(x)=(3x³+6x-6)/(x²+3x-10)
Wednesday, July 6, 2011 at 10:57pm by Reanna
advanced functions
simplify the rational expression x^4+3x^3-2x^2-6x/x^3-2x stating all restrictions on the variable.
Friday, July 30, 2010 at 9:26pm by tim
math,help,bobpursly
What are some challenges for rational expressions? Also on my previous question about why are polynomials important bobpursly can you expalin it to me towards what you ment about your responce because i still do not undertand...thanks when you get a chance. Polynomials are ...
Monday, March 5, 2007 at 6:31pm by jas20
Functions in Math
Im looking at internet sites and Im not quite understanding functions. I have a question like; A function f(x) has the properties i) f(1) = 1 ii) f(2x) = 4f(x)+6 Could you help me out. I know nothing about functions.
Monday, October 15, 2007 at 3:54pm by Lena
Math-Rational #'s
First look up the definiton for a rational number and then go from there. Perhaps your textbook has a glossary or beyond that what is its meaning in a dictionary? Vocab terms can be dicey in any language, and math is no exception.
Monday, March 15, 2010 at 8:52pm by Blarney Fife
math help me!!
is square root of 56 a rational number? explain uranswer using what you know about rational and irrational numbers. thnx alot!
Wednesday, April 13, 2011 at 7:17pm by alexis
Algebra II
Give the equations of any horizontal asymptotes for the graphs of the rational functions. h(x)=(7x²-8x-5)/(8x²-3x+9) g(x)=(x²+4x-8)/(x-8)
Wednesday, July 6, 2011 at 10:45pm by CC
math :] 2
Ah, not to beat a dead horse here but let's make sure the cart is before that horse. The real point is that 14/3 is a RATIO of whole numbers as Reiny capitalized. That is what makes it a rational number. The fact that it is a repeating decimal means that it can be written ...
Monday, February 18, 2008 at 2:19pm by Damon
discrete math
1)prove that if x is rational and x not equal to 0, then 1/x is rational. 2) prove that there is a positive integers that equals the sum of the positive integers not exceeding it. Is your proof constructive or nonconstructive? For 1) use the definition of a non-zero rational ...
Thursday, September 28, 2006 at 6:10pm by thisha
algebra
Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 4/x-y , 5/2y-2x
Monday, July 13, 2009 at 6:49pm by Joe
Precalculus
I'm HOPING this is the last problem I need help on.. :-/ List the possible rational zeros of f using the rational zero theorem. f(x) = 2x^3 - x^2 + 5x + 6 I applied the rational zero theorem, but none of the factors worked :(
Thursday, September 17, 2009 at 1:24am by Emily
math
A rational number is any number which can be expressed as a fraction of two integers. The set of all rational numbers is ℚ. The answer would be any rational number between 1/8 and 2/4, i.e. find x where 1/8<x<2/4 x∈ℚ. Draw the two ...
Monday, December 14, 2009 at 8:36am by MathMate
math
List all possible rational zeros of... h(x)= 2x to the (4th power) - 5x (to the third power) + 3x (to the 2nd power) + 4x - 6 Use the Rational Roots Theorem. Any root of the form p/q with p and q relatively prime must be such that p divides 6 and q divides 2. You then find the...
Monday, May 21, 2007 at 6:22pm by Kate
Advanced Math.
Yes, this is what you get when you apply the Rational Roots theorem. But your list is very long, so it is of little use. It is a bit like answering the question by saying that all possible rational roots are the members of Q (as the problem didn't specifically say to list ...
Monday, March 23, 2009 at 11:58am by Count Iblis
Math
the domain of all polynomials is all reals. There's no number where f(x) is undefined. For rational functions (the quotient of two polynomials p(x)/q(x)) the domain is all reals except where q(x)=0 because division by zero is undefined. For functions with square roots (or ...
Wednesday, March 27, 2013 at 2:30pm by Steve
Algebra
I do not know of a difference between rational zeros and rational roots. As far as I know what we call a "root" is a zero of the polynomial. The idea is that if all coefficients are integers the factors must be ratios of the leading coefficient and the constant term...
Monday, March 31, 2008 at 5:30pm by Damon
College Algebra
Given the following rational functions,find:a.)the horizontal asymptote(s), b.)the vertical asymptote(s), if any,and c.) the oblique asymptote(),if any. f(x)=x(x-17)^2/(x+12)^3
Tuesday, December 18, 2012 at 8:52pm by Shasta
math
which statement is false: A: 3.648 reapating 8= is rational B:-3 2/13= is rational C: 3.605551275464...=is irrational D: -3.744= is irrational
Friday, February 15, 2013 at 9:33pm by Taylor
Algebra
usually factors only contain rational numbers. The roots of your equation are irrational, so there are no rational factors. or multiply the first times the last, 2 x 7 = 14 Are there any factors of 14 that add up to 10 ? NO, so there are no rational factors or evaluate the b^2...
Friday, November 19, 2010 at 9:09am by Reiny
Math
not really knowing what your ... means it is either rational or irrational if there is a repeating decimal, then rational if there is no pattern to your decimals, then irrational
Saturday, April 21, 2012 at 9:53pm by Reiny
math
Eight types of functions are graphed and explained at this tutorial site: http://www.analyzemath.com/Graph-Basic-Functions/Graph-Basic-Functions.html There is a place to click on the page to get it to work interactively. I don't know what you mean by Parents graphs.
Monday, May 12, 2008 at 10:22pm by drwls
math
A: 3.648 reapating 8= is rational B:-3 2/13= is rational C: 3.605551275464...=is irrational D: -3.744= is irrational
Friday, February 15, 2013 at 9:57pm by Taylor
math
A: 3.648 reapating 8= is rational B:-3 2/13= is rational C: 3.605551275464...=is irrational D: -3.744= is irrational
Friday, February 15, 2013 at 9:44pm by Taylor
Math
It is important to understand any exponent. It is part of mathematics. The number C^(a/b) is the b th root of C^a. b/a is the rational exponent Here, b and a are integers. That is how rational numbers are defined.
Thursday, September 18, 2008 at 9:57pm by drwls
math
1. Which of the following numbers is an example of an integer? a. -15 b. 3/5 c. ^7 d. 0.252525... 2. Which statement is FALSE? a. Every integer is a real number. b. The number zero is a rational number. c. Every irrational number is a real number. d. Every real number is a ...
Monday, August 27, 2012 at 2:38pm by Nyla
functions
Identify a rational function whose graph is a horizontal line except for two holes. Graph function.
Wednesday, September 29, 2010 at 4:22pm by Tori
math test
Hi! I have a math test coming up tomorrow, and I need to prepare. but,i dont know how I should. . . any help would be great. she told us to: Be prepared to identify and explain functions, linear functions and proportional functions. Be prepared to use the new function notation...
Thursday, October 11, 2007 at 9:39pm by Keon
Math
Does -3/4 belong in the group, integers and rational numbers. in order it goes:Natural #s-1,2,3,4... Whole #s-0,1,2,3,4... Integers-whole #s & opposites(negatives) Rational #s-numbers written in fractions or decimals Please read: http://regentsprep.org/Regents/math/...
Thursday, December 14, 2006 at 9:52pm by Katie
Math Analysis
Note: small correction to my previous answer... Both occurrences of "rational expression on the right side" should be replaced with just "rational expression".
Saturday, December 15, 2007 at 9:17pm by Cathy
Math Word Problem
We will try to prove this by contradiction. Hypothesis: existence of q=a/b which is the largest rational number less than 5, i.e. q=a/b<5 and b≠0, and that no other rational number exists that is larger than q and less than 5. We will calculate the r, the average...
Friday, October 9, 2009 at 8:10pm by MathMate
math
I think that the similarities in rational expressions and fractions are very similar in functions. The need to utilize common denominator and find the LCD is relatively the same. The factoring process between the two is similar, but the difference is in the use of x’s and...
Thursday, April 3, 2008 at 2:07pm by S
Algebra 2
x^3 – x^2 – 11x – 10 = 0 Assuming again that the roots are rational numbers, it follows from the Rational Roots Theorem that the roots are integers that divide the number 10. So, the only possible rational roots are: x = -10, x = -5, x = -2, x = -1, x = 1, x = 2...
Sunday, January 13, 2008 at 7:42pm by Count Iblis
math
can you write it as fraction? if yes, then it's a rational number. http://www.mathsisfun.com/rational-numbers.html
Thursday, April 28, 2011 at 9:04pm by TutorCat
Math
Which of these rational numbers does the Rational Roots Theorem say can't be a solution to 14x7 + 13x5 − 19x4 + 7x2 − 6x − 21 = 0? A. 3/2 B. 2/7 C. -1 D. -(1/2)
Friday, December 14, 2012 at 4:07pm by Pat
Math
Use the functions f(x)=x+4 and g(x)=2x-5 to find the specified functions. (g x f)^-1
Wednesday, March 25, 2009 at 5:23pm by Jake
Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>
For Further Reading
