1,748 Answered Questions for the topic Functions

Functions

02/09/14

f(x) = 0, where f(x) = -8x2 + 8x + 7.
Select the approximate values of x that are solutions to f(x)=0, where f(x)=-8x^2+8x+7   a.(1.56,-0.56) b.(-8,8) c.(-1.00,-0.88) d.(-1.14,1.14)
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Functions

02/09/14

What are the factors of x^3-10x^2+17x+28
What are the factors of x^3-10x^2+17x+28
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Functions

02/08/14

What are the factors of x^3-10x^2+17x
What are the factors of x^3-10x^2+17x
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Functions

02/05/14

Find the number of days when 0.999 people of a group is discharged
Total proportion discharged at the end of t days of hospitalization can be obtained by:   f(t)=1-(300/300+t)^3   Please include the workings for the following... more
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02/03/14

Can you think of one real-world example of when the concept of functions might be useful? Do you think you will ever use functions in your life to solve probl
Can you think of one real-world example of when the concept of functions might be useful? Do you think you will ever use functions in your life to solve problems? If yes, explain how and why; if... more
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01/24/14

function/ graphing
Discuss/Explain how the graph F(x) = -2f(x+1) -3 can be obtained from the graph f(x). If (0,5), (6,7), and (-9,-4) are on the graph of f. where do they end up on the graph of F? 
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Functions College Algebra

01/19/14

2x^3+x+8=0
Enter answers as a comma-separated list. Round to three decimal places.
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Functions

01/09/14

x^2=y^2 functions
determine whether each equation defines y as a function of x
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12/09/13

Exponential Functions
Identify the variables, identify the constants, write the function, solve the equation and write a complete answer.   Suppose the acreage of forest is decreasing by 6.5% per year because of... more
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12/07/13

Given functions f and g, perform the indicated operations:
f(x) = 8x2 -7x g(x) = 8x - 4   (fog)(x)   I would really appreciate the steps and final outcome of this problem. Thank you!
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12/07/13

Evaluate and simplify the following function:
f(x) = 3x2 - 2x -3 f(x-1) =    I would really appreciate the steps and final outcome of this problem. Thank you! 
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Functions

12/05/13

if f(x) is a cubic polynomial, find a rule for f (x)
may be left in factored form
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12/02/13

determine, find, and graph...............
Given f(x)=5x+8. (a) Determine whether f(x) is one-to-one. (b) Find a formula for its inverse. (c) Graph f(x) and f^(-1) (x) on the same axis
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Functions

12/02/13

For the function solve f(x)
For the function f(x)= 4x + 40/x, solve f(x)= 28
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Functions

12/01/13

Need help with functions
h(x)=1/1+x=0.1, so x=9, whats h^-1(x) and how to find it?
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Functions

11/27/13

approximate each real zero
Given f(x)=6x^4-7x^3-23x^2+14x+3, approximate each real zero as a decimal to the nearest tenth.
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11/26/13

Rational Expression and Equations ,Functions
Simplify this rational expression    x^2+3x-7    x^2+5x-9       x^2-6x+14 ----------- - ------------- + --------------- x^2-2x-8     x^2-2x-8         x^2-2x-8    
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Functions

11/18/13

If f(x) = 2x, which of these 5 functions yields the greatest value for f(g(x)), for all x > 1
Listed below are 5 functions, each denoted g(x) and each involving a real number constantc > 1.If f(x) = 2x, which of these 5 functions yields the greatest value for f(g(x)), for allx >... more
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Functions

11/18/13

What is the value of g(f (3))
For the 2 functions, f (x) and g(x), tables of values are shown below. What is the valueof g(f (3)) ?x  ¦f(x)                 x ¦g(x)–5 ¦  7                –2 ¦3 –2 ¦ –5                 1 ¦–1 1... more
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Functions X Intercept

11/13/13

What's the x intercept of y=3x-6?
Its for a math thing and I just dont get it can someone plz explain  
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11/10/13

what is the function whose graph is the graph of y=|x|, but is shifted down 5 units.
What is the function whose graph is the graph of  y=|x|, but is shifted down 5 units.
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11/09/13

Horizontal stretches/compression?
For horizontal compressions, I know you do it if x is greater than 1, but do you divide or multiply the x value by the c value? Why would it be a vertical compression of c?   So if you had... more
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Functions

11/09/13

Find the area under the curve given by f(x) = 3x2+ 5x
Find the area under the curve given by f(x) = 3x2+ 5x                                               8marks
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Functions

10/21/13

a rectangle has a length of 6x-5 feet and a width of 2x+9 feet. Find the perimeter
a rectangle has a length of 6x-5 feet and a width of 2x-9 feet.  Find the perimeter of the retangle.    
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10/16/13

Define the following functions.
1. f(x)= |x|; g(x)= |x-3| a.) f+gb.) f-gc.) f⋅gd.) f/ge.) g/f   2. f(x)=1/(x+1); g(x)=x/(x-2) a.) f+gb.) f-gc.) f⋅gd.) f/ge.) g/f   3. f(x)=x^2; g(x)=1/√x a.) f+gb.) f-gc.) f⋅g d.) f/ge.) g/f
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