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Question 807888: Can you help me please to solve this question:find the rational function F:ℝ→ℝ with range f:(ℝ)= [0,1] .(thus f(x)=p(x)/Qx) for all xεℝ for suitable polynomial P and Q where Q has no real root). you should justify your choice of f clearly. [10 marks]. I�m really stuck, i dont even know how to start it. it would be so nice if you can help. thank you
Click here to see answer by KMST(5328)

Question 808124: 7 to square root of x-18+3
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Question 808136: what is the equation of a line passing through (3,4) and slope of -5 ?
Click here to see answer by jim_thompson5910(35256)

Question 808125: Given the parent functions f(x) = 5x - 1 and g(x) = 3x - 9, what is g(x) - f(x)?
Click here to see answer by fcabanski(1391)

Question 808345:
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Question 808503: How would you sketch the graph of function f(x)= 2^x-2?????
Click here to see answer by TimothyLamb(4379)

Question 808867: quadratic functions of the form f(x)= a(x-h)2+k
a) y= -2/3(x-3)2
b) y=5(x+4)2
i) State the value of a and h in each of the given quadratic functions
ii) Describe the role of each variable in the equation. Justify your answer.
iii) State the vertex and concavity of the parabola represented by the equation.
Click here to see answer by solver91311(24713)

Question 808852: state the following for the quadratic function
I)vertex
ii) axis of symmetry
iii)concavity
iv) domain
v)range
vi)minimum or maximum value
vii)two symmetrical points
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Question 809099: Evaluate the quantity F(-5) given the following function.
F(t) =1-t^2
F(-5)=_________________________________
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Question 809244: If f(x)=5x+2, find f(x)-f(x+1)
Click here to see answer by josgarithmetic(39617)

Question 809254: My daughter came home from school with math homework and we need help because honestly i don't get it either. so it says Each set of ordered pairs represents a function.Write a rule that represents the function. The ordered pairs are (0,0) (1,0.5) (2,2) (3,4.5) (4,8). Please help because it is due on Friday.
Click here to see answer by TimothyLamb(4379)

Question 809756: G(x)= x+5
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Question 809797: Find the domain (with the two restrictions)of the function:
y=(sqr(x+7))/(x-8)
(i.e. square root of x + 7 on top the fraction bar with x - 8 on bottom)
I got [-7, 8)U(8, infinity) but home work site says it's incorrect. Puzzled!
Click here to see answer by josmiceli(19441)

Question 810050: Find f(4) when f(x)=5^2 please help
Click here to see answer by josmiceli(19441)

Question 810236: What would be the intercepts of the line that contains pair of points:
" (-1,-4) and (6,10) " ?
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Question 810264: find the slope and the y intercepts of the linear function
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Question 809557: Write the function whose graph is the graph of y=x^3, but is shifted to the left 13 units.
y=________________________
Click here to see answer by tommyt3rd(5050)

Question 810459: f(x) = 4x + 5
g(x) = 7x - 2
Find: (fg)(3
Click here to see answer by oscargut(2103)

Question 810510: The directions say: "For each function, the vertex of the function's graph is given. Find the unknown coefficients.
y=x^2+bx+c ; (-4,-7)
I've done all of my other problems, but I do not know how to start solving it or how to solve it at all. Please help. It would be greatly appreciated. :)
Click here to see answer by oscargut(2103)

Question 810743: Y is 5 less than the product of 4 and x
Click here to see answer by erica65404(394)

Question 810886: g(x)=2^x show: g(x+1) = g(x)
Click here to see answer by fcabanski(1391)

Question 810733: please help. Use the intermediate value theorem to show that for 0
Click here to see answer by fcabanski(1391)

Question 811398: may you help me solve this question : a function is defined as f:ℝ\{0,2π}→ℝ with f(x)=(3x-2)/(1+x), is this a bijective function and why?. thanks
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Question 811810: Find the range of the relation {(�2, 3), (�1, 3), (�1, 5)}. Then determine whether the relation is a function
Click here to see answer by richwmiller(17219)

Question 811811: Find f(a) if f(t) = t2 � 2t � 2
Click here to see answer by luke94(89)

Question 811967: please please help :define a function f:[0,2pi]->real number such that f(0)=f(2pi).show that there exist an element x in [0,pi] such that f(x)=f(x+pi). thanks a lot.
Click here to see answer by solver91311(24713)

Question 811973: hey just a simple question on relations and functions.im working out of a text book a and worksheet. my papers instructions are:
To evaluate each function for the given value of x, and write the input x and the output f(x) as an ordered pair.
for example. F(x) = -3x+2 for x = 3
F(x) = 1/2 x -1 for x = -2
the lesson in the book is just didnt click for me. here is the lesson in the book:
The Area of a square tile is a function of the length of a side of the square. write a function rule for the area of a square. evaluate the function for a square tile with the side legth of 3.5in
Relate: area of a square IS (side length)^2
Define: Let[s] = the length of one side of the square tile, then A(s)= the area of the square tile

Write: A(s) = s^2
A(3.5) = (3.5)2 Substitute 3.5 for S
= 12.25 Simplify
The area of a square tile with side length 3.5 in is 12.25 in ^2
______________________
that lesson really didnt explain to me how to complete the 2 questions at the top of the page. i know what a function is, i know what and how to find the domain and range. i know how to put it on a graph. and i do realize that F(x) means F of x, not F times x.
maybe you can help explain how to do a the two problems at the top and i can start to finish my paper. Thank you!
Click here to see answer by richwmiller(17219)

Question 812282: Can I please get help to answer the following functions. Thank you
Given f(x)= x+3 and g (x)= 2xsquared find f(-2)and g(x squared)as two seperate functions.
Click here to see answer by luke94(89)

Question 813349: f(x)=-6x-1 and g(x)- 4x^2
what is the solution for (fg)(x)
Click here to see answer by josgarithmetic(39617)

Question 813352: please help:
show that there is at least one function to x^3+x=3 for x greater than 0.
Click here to see answer by htmentor(1343)

Question 813394: How many onto functions are there from a set with three elements to a set with eight
elements?
Click here to see answer by jsmallt9(3758)

Question 813633: If f(x) = x^2 +7x find f(b+2)
Click here to see answer by ewatrrr(24785)

Question 813662: Determine the average rate of change for the function f(x)=x^2+2x from 5 to 9 using f(b)-f(a)/b-a.
Click here to see answer by Alan3354(69443)

Question 813683: State the number of real zeros. Approximate each real zero to the nearest tenth. Approximate the relative minima and relative maxima to the nearest tenth. : f(x)= -x^3+x^2-1
What I tried:
I successfully graphed the function.According to Descartes' Rule of Signs, there are 2 or zero positive real zeros and 1 negative real zero. Referring to the Intermediate Value Theorem, I decided that there was a real zero between [-1,1]. I did this:
f(-1)=1 -> f(-.9)=.539 -> f(-.8)=.152 -> f(-.7)=-.167.
Since there was a change in signs between -.8 and -.7, I got that the negative real zero is -.8.
My Question:
How do I find the positive real zeros, if there are any and how do you find the relative minima and relative maxima?
Click here to see answer by richwmiller(17219)

Question 813855: find the domain and range of y=0.6x+9
Click here to see answer by ewatrrr(24785)

Question 814232: today jessica and melissa are having a birthday both girls are at least 9 years old but not older than 16 if melissa is 2 years older than jessica how old can they be
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Question 814234: the sum of two positive integers is at most 5 what could the integers be if they are unequal
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Question 814341: Table shows the number of movies that made at least $20 million for different years.
Year: 1990 1995 1998 1999 2000

Movies 30 36 37 42 49
Write an equation that models the number of movies as function of the number of years since 1990.
Click here to see answer by TimothyLamb(4379)

Question 814394: Given f (x)= x+3 and g (x)= 2x^2, please help me find?
f(-2)
Click here to see answer by luke94(89)

Question 814590: Please help me sketch the following function but first determine the critical points.
F (x)=x^2-2x-3: xintercepts, y-intercepts and vertex
Click here to see answer by ewatrrr(24785)

Question 814701: Suppose that f(x)=2x^2+3x and g(x)=-2x+3, solve f(x)=g(x)
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Question 814722: f(x)=2x^2+3x and g(x)=-2x+3, solve f(x)=g(x)
Click here to see answer by ewatrrr(24785)

Question 814776: Please help me sketch the following function but first determine the critical points.

F (x)= sqrt(x-4): xintercepts, y-intercepts and vertex''.

Click here to see answer by LinnW(1048)

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