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December 22, 2014

Search: Math - Simple rational functions (check)

Number of results: 112,743

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 be made...
September 13, 2007 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?
October 14, 2007 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.
October 5, 2008 by Mae

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 ...
October 23, 2007 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 ...
October 6, 2008 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.
April 1, 2008 by Pam

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 line it passes ...
October 15, 2012 by Enlia

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.
February 9, 2010 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...
December 14, 2006 by Katie

Math advance functions gr 12
Using rational functions solve 7+ 1(numerator) x (denominator) = 1 (numerator) x-2(demominator)
April 1, 2013 by alex

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 ...
October 2, 2012 by Shreya

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 ...
May 2, 2011 by Debra

Math - Simple rational functions (check)
Consider the function f(x) = x/(x-1) Are there any turning points? Explain how this could help you graph f(x) for large values of x? Ans: turning points is another word for checking the concavity, and therefore i find the second derivative and equate it to zero and see where ...
October 29, 2010 by Anonymous

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
March 15, 2010 by Kate

advance functions gr12 HELP ASAP
using rational functions solve (x+5)/(x-3)= (2x+7)/(x) thank you
April 2, 2013 by ALEX

advance functions gr12 HELP ASAP
Using rational functions solve 7+ (1)/x = 1/(x-2) thank you
April 2, 2013 by james

advance functions gr12 (SORRY LAST ONE HAD A TYPO)
Using rational functions solve 7+ (1)/x = 1/(x-2)
April 2, 2013 by james

advance functions gr12
Using rational functions solve (7+ 1)/x = 1/(x-2)
April 2, 2013 by james

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 please
June 7, 2009 by Halle

rational functions
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.
January 27, 2007 by luke

Math Rational Functions
What is the domain and range of 2x^2-18/x^2+3x-10
October 15, 2012 by Enlia

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.
January 27, 2007 by luke

Math rational exponents
what is the domain of these functions? y= -1/5x^(-1/3) and y=10x^ (-1/6)
November 14, 2010 by Charm

advance functions gr 12
Using rational functions solve 3(numerator) 2x-4 (denominator) < (with a "-" underneath) 4 (numerator) x-2(demominator)
April 1, 2013 by james

Math
All rational functions can be expressed as f(x) = p(x)/q(x), where p and q are __________ functions and q(x) ≠ 0. A. horizontal asymptotes B. polynomial C. vertical asymptotes D. slant asymptotes Is the answer D. vertical asymptotes?
October 19, 2014 by Sarah

advance functions gr 12
Using rational functions solve x+5(numerator) x-3 (denominator) = 2x+7 (numerator) x(demominator)
April 1, 2013 by Fadak

advance functions gr 12
Using rational functions solve x+5(numerator) x-3 (denominator) = 2x+7 (numerator) x(demominator)
April 1, 2013 by Fadak

advance functions gr 12
Using rational functions solve 7+ 1(numerator) x (denominator) = 1 (numerator) x-2(demominator)
April 2, 2013 by james

ALGEBRA
SIMPLIFY: 5 ROOT OF 6X +4 ROOT OF 6X IS THE ROOT OF 77 IRRATIONAL OR RATIONAL? SIMPLIFY: 8 + ROOT OF 24 DIVIDED BY 2 IS THE ROOT OF 49/100 RATIONAL OR IRRATIONAL AND IS THE ROOT OF 121 RATIONAL OR IRRATONAL? SIMPLIFY: ROOT OF 3X/2 THANKS IN ADVANCE!!!I AM FLUNKING THIS MATH ...
June 10, 2007 by Tomika

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 there aren't any...
November 7, 2009 by Elizabeth

Algebra 1
Which values should I use to graph the rational function y = 1/x-2 - 6? (The asymptotes are x = 2; y = -6.) Also, what method could I use to choose values for graphing rational functions?
May 16, 2014 by Anonymous

Algebra 1
Which values should I use to graph the rational function y = 1/x-2 - 6? (The asymptotes are x = 2; y = -6.) Also, what method could I use to choose values for graphing rational functions?
May 16, 2014 by Victoria

Rational Functions
Write an equation for a rational function whose graph has the following properties: x-intercept of 3 y-intercept of -3 vertical asymptote of x=-2 horizontal asymptote of y=2
October 6, 2014 by Rebecca

math. can someone do this for me please....
* Consider the functions f(x)=1/x +4 and g(x)=2/x. Graph f and g on the same grid. a)Determine the points of intersection of the two functions. b)Show where f(x)<g(x). c)Solve the equation 1/x +4=2/x to check your answer to part a). d)Solve the inequality 1/x +4<2/x to ...
January 6, 2014 by *ajay*

****college algebraradical 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.
October 16, 2011 by Brianna

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...
January 21, 2008 by Nathan

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 ...
October 28, 2006 by Vianna

math
What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a rational number. Please help me I don't know what to do.
October 21, 2014 by blue

math advanced functions grade 12
Find the solution set to the following rational inequality, 240/x+8 > 20x/x+1
July 24, 2012 by illiah

math
What is the best sequence of names to identify this set of numbers? (1 3/5,-10, 0.51(the one is repeating), TT,17) 1.(rational,integer,irrational,irrational,natural) 2. (rational,irrational,rational, irrational, whole) 3.rational,real,rational,real, natural) 4. (real,integer, ...
November 17, 2013 by B8

math- please help
What is the best sequence of names to identify this set of numbers? (1 3/5,-10, 0.51(the one is repeating), TT,17) 1.(rational,integer,irrational,irrational,natural) 2. (rational,irrational,rational, irrational, whole) 3.rational,real,rational,real, natural) 4. (real,integer, ...
November 17, 2013 by B8

Math
What do you do to check if a number is rational or irrational? In the explanation use a rational and irrational number.
September 27, 2013 by Steve

Algebra plz check
Find all numbers for which the rational expression is undefined -12/5y. The rational expression is defined for every real number is this correct?
June 5, 2011 by sam

anonymous
1.) an account invested in a month market fund grew from $67,081.20 to $67,359.39 in a month. What was the interest rate, to the nearest tenth? 2.)you are due a tax refund of $760. your tax preparer offers you a no-interest loan to be repaid by your refund check, which will ...
March 15, 2011 by math i have a few questions.hepl pls ty

Functions
what is the oblique asymptote of this rational function: (x ^ 3) / (x ^ 2+1)
April 18, 2013 by Lg

Reiny and steve do this for me please
1. Consider the functions f(x)=1/(x)+4 and g(x)=2/(x). Graph f and g on the same grid. a) Determine the points of intersection of the two functions. b) Show where f(x)<g(x). c) Solve the equation 1/(x)+4=2(x) to check your answer to part a). d) Solve the inequality 1/(x)+4&...
December 16, 2013 by Joan

Math - Simple rational Function (check)
Consider the function f(x) = x/(x-1) Are there any turning points? Explain how this could help you graph f(x) for large values of x? Ans: turning points is another word for checking the concavity, and therefore i find the second derivative and equate it to zero and see where ...
October 25, 2010 by Anonymous

Algebra
After solving a rational equation, why is it important to check your answer? How is this done? What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero?
October 6, 2011 by Hazel

algebra
after solving a rational equation, why is it important to check your answer? How is this done? What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero?
January 26, 2012 by debby

Algebra II
Give the equations of any horizontal asymptotes for the graphs of the rational functions. h(x)=(7x-8x-5)/(8x-3x+9) g(x)=(x+4x-8)/(x-8)
July 6, 2011 by CC

Algebra II
Give the equations of any vertical asymptotes for the graphs of the rational functions. f(x)=(x-4)/(x+7)
July 6, 2011 by Reanna

Algebra II
Give the equations of any vertical asymptotes for the graphs of the rational functions. f(x)=(3x+6x-6)/(x+3x-10)
July 6, 2011 by Reanna

Algebra II
Give the equations of any vertical asymptotes for the graphs of the rational functions. f(x)=(x-4)/(x+7)
July 7, 2011 by Matt

Check my CALCULUS answers please!
Any short explanation for things I got wrong would be great, too, if possible! Thanks in advanced! :) 8. Which of the following functions grows the fastest? ***b(t)=t^4-3t+9 f(t)=2^t-t^3 h(t)=5^t+t^5 c(t)=sqrt(t^2-5t) d(t)=(1.1)^t 9. Which of the following functions grows the ...
October 7, 2013 by Samantha

Pre-Calc-Please check
Is this correct? Using Rational Roots Theorem, list all possible rational root of f(x) = 2x^3 - 3x^2 + 5x+6 Possible roots are p/a = -+1, -+2, +-3, -+6. -+3/2
January 10, 2012 by Julia

math rational comparing #'s
can you check: < > = -2/9 > -4/9 -1/6 > -2/3 -5/12 > - 3/4 -1 < - 1/3 -5/6 = -10/12 -1/8 > - 1/2 -1.2 > -2.1 -0.6 < -0.52 -1.23 < -1.25 -0.53 < -5.333 -3 1/4 = -3.25 -4 2/5 < -4.12 are these right?
December 8, 2011 by marko

advanced functions
simplify the rational expression x^4+3x^3-2x^2-6x/x^3-2x stating all restrictions on the variable.
July 30, 2010 by tim

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 ...
October 29, 2006 by V

math
x+4/2x*6x^2/x^-16= (x+4)/2x*6x(x)/(x+8)(X-8) rational expression using factoring could some check this.
May 22, 2010 by Anthony

Math
Why is it necessary to perform a check when solving rational equations?
August 5, 2010 by Jayde

Math Check
The only inequalities where I have to check the values between the points are polynomial and rational inequalities, right? And not any other type of inequalites By Checking I mean to know which way to shade on a graph Just making sure
September 28, 2010 by Amy~

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...
February 24, 2008 by Jon

algebra functions
can someone please check my answer For each problem, construct two composite functions, . Evaluate each composite function for x=2 f(x)=3x g(x)=1/x f(g)*(x)=3x(1)/x x=2 3x(1)/x=6 g(f)*(x)=(3x)=2*3x=6 x=2 3*(2)=6*6=36
October 17, 2013 by tani

algebra functions check my answer
For each problem, construct two composite functions, . Evaluate each composite function for x=2 f(x)=3x g(x)=1/x f(g)*(x)=3x(1)/x x=2 3x(1)/x=6 g(f)*(x)=(3x)=2*3x=6 x=2 3*(2)=6*6=36
October 17, 2013 by tani

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.
October 15, 2007 by Lena

algebra
List all possible rational zeros given by the Rational Zeros Theorem (but don't check to see which actually are zeros). (Enter your answers as a comma-separated list.) S(x) = 6x4 − x2 + 6x + 12
June 25, 2011 by kelley

Math
What is an example of two functions that intersect at least twice in the first quadrant but can neither be a polynomial or a "simple" function (i.e., sin(x), e^x)?
April 9, 2011 by Joe Schmo

Math(Please Check)
Problem: 4x/(x+2)-8/(x-1) What I Got: 4x^2-4x-16/(x+2)(x+1) *I had to simplify the rational expression No. At x=0, it doesn't check. The starting problem gives 8, your answer gives -8. I suspect a sign error somewhere. Probably in the denominator, the x+1 should be x-1
March 5, 2007 by margie

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.
May 2, 2009 by Anonymous

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. ...
May 6, 2007 by Kimberly

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
September 20, 2010 by Ross

Pre-Calc-Please check
I have three questions: 1. What is the remainder of (x^3 + 2x^2 - 5x+4) /(x-3) I think the answer is 34?? 2. Evaluate (4+5i)(2+2i) =4(2) +4(2i) + 5i(2) + 5i(2i) = 8 + 8i + 10i+10i^2(-1) =-2 + 18i 3. Using Rational Roots Theorem, list all possible rational root of f(x) = 2x^3...
January 9, 2012 by Julia

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!
September 12, 2010 by Julia

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?
October 14, 2007 by Anonymous

math
can someone check my answer on this one? rewrite with rational exponents: (sqrt5mn)^9 i got: 5^9/2m^9/2n^9/2 is this correct?
November 5, 2010 by barb

English
Read each sentence then write whether the sentence is simple or not simple My dog Buddy fetches the paper in the morning Simple The subway which runs under the city is a fast way to travel Not simple Cici sings in the school choir simple Jen talks on the phone and does her ...
January 22, 2013 by Jerald

Math - Simple rational Function (check)
A pollutant has been leaking steadily into a river. An environmental group undertakes a clean-up of the river. The amount of pollutant in the river after t years the clean-up begins is given by the equation N(t)=0.5t+(1/(10t+1)) a) What quantity of pollutant was in the river ...
October 25, 2010 by Anonymous

math
If a b c are non zero,unequal rational numbers then prove that the roots of the eqn (abc) x+ 3acx+bcx-6a-ab+2b=0 are rational.
July 7, 2014 by vaish

math
which statement is false? A: 3.648 reapeating=is rational B:-3 2/13=rational
February 15, 2013 by Taylor

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
December 12, 2012 by Frances

Math
Find all possible rational roots using the rational root theorem. x^4 - 3x^2 + 12 = 0 Plus/minus 1, 2, 3, 4, 6, 12?
November 16, 2014 by Anonymous

advanced functions/precalculus
1. The function f(x) = (2x + 3)^7 is the composition of two functions, g(x) and h(x). Find at least two different pairs of functions g(x) and h(x) such that f(x) = g(h(x)). 2. Give an example of two functions that satisfy the following conditions: - one has 2 zeros - one has ...
January 15, 2014 by Diane

2 Math Questions
1) What do you do to check whether a number is rational or irrational? Use an example of a rational and an irrational number. 2) How does finding the square root [√] of a number compare to finding the cube root [^3√] of a number? Use the number 64 in your ...
November 6, 2014 by ABCDEFGHIJKLMNOPQRSTUVWXYZ

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 ...
March 5, 2007 by jas20

math help me!!
is square root of 56 a rational number? explain uranswer using what you know about rational and irrational numbers. thnx alot!
April 13, 2011 by alexis

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.
December 16, 2009 by Amelia

algebra1
I have a question does anyone have the Rational Expressions and Functions Unit Test questions and answers?? If you can you plzz help me out i am almost done
May 19, 2014 by Tommy

Function compostions
Sorry I had to repost, I left somethings out. Can you please check my answers? For the given functions f and g, find the indicated composition. 5. f(x)=7x+9, g(x)=2x-1 Find (f *g)(x) I got 14x+2 For the given functions f and g, find the indicated composition. 8. f(x)=-5x+3, g(...
September 15, 2007 by Soly

math
Which statement is true? A. All irrational numbers are also rational numbers. B. Half of the irrational numbers are also rational numbers. C. One-third of the irrational numbers are also rational numbers D. Irrational numbers cannot be classified as rational numbers. Is the ...
September 26, 2014 by Anonymous

simple math check
(1/2)(3x^2+5x+3)^(-1/2)(6x+5) when you plug in 5 for x.. do you get 1.72 because that what i get and then it says im wrong.
April 29, 2008 by John

Calculus
Find the sum and difference functions f + g and f g for the functions given. f(x) = 2x + 6 and g(x) = 2x - 6 f(x) = x^2 - x and g(x) = -3x + 1 f(x) = 3x^3 - 4 and g(x) = -x^2 + 3 State the domain and range for the sum and difference functions in #3. Find the product and the ...
September 2, 2013 by Bee

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...
May 21, 2007 by Kate

math
is it true that you only have to check your solution in a rational equation if the solution is 0?
September 27, 2012 by Matt

Math
Rational Equation, how do you work it out I need to check my work. x 1 x - = 2 3 4 I got 4 3
April 21, 2014 by Sadie

Math(Please check)
Find the domain of the following rational function. R(x) = -3x^2 / x^2 + 2x - 48 (x+8)(x-6) So the domain is x cannot be 8 or -6. Am I correct?
November 4, 2010 by Hannah

Math(Please check)
Find the domain of the following rational function. R(x) = -3x^2 / x^2 + 2x - 48 (x+8)(x-6) So domain is x cannot be 8 or -6. Am I correct?
November 4, 2010 by Hannah

Math
Which statement is false? A. The number zero is a rational number. B. Some irrational are also rational numbers. C. Every irrational number is a real number. D. Every integer is a rational number Is the answer C?
October 17, 2014 by happy

Math
What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a rational number. How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation
December 15, 2014 by HELP MEEEEE

Math answer check
Determine the type of number that the solutions of x^2 +5x+3=0 will be I have the answer as rational is that right?
November 9, 2008 by Shawn

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 ...
September 28, 2006 by thisha

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