1,744 Answered Questions for the topic Functions

Functions

08/18/15

reciprocal of a function
explain what occurs to the x-intercepts of a function, when sketching its reciprocal and why.
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08/17/15

Limits help!!!
  Determine whether the function is continuous or discontinous. Justify your reasoning. If discontinuous, identify points of discontinuity.                   2-X^2 if X <= 1 ƒ(x)=... more
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Functions

08/15/15

Area of a rectangle
f(x) = x2 - a and g(x) = a - x2, where a is a constant. Points S and T lie on the graph of g(x), points V and U lie on the graph of f(x), and the length of VU is 2a. Which of the following... more
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07/31/15

I really don't understand algebra or word problems...please help!
A water balloon is tossed into the air with an upward velocity of 25 ft/s. Its height h(t) in ft after t seconds is given by the function h(t) = − 16t^2 + 25t + 3. After how many seconds will the... more
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Functions

07/28/15

find possible functions
If h(x) = 4+1/(sq root of x-5), find possible functions f and g so that h(x)= (fog)(x). DO NOT DO NOT DO NOT use f(x)=x or g(x)=x. Check solution
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07/27/15

4 questions about functions
1. The number of milligrams of a drug that remains in a patient's system after t hours is given by the function A(t) = Iert. Ted was given 200 milligrams of medicine which leaves his bloodstream at... more
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Functions Exponential

07/20/15

Find the equation of the exponential function represented by the table below.
x      y   0      3 1      1.5 2      0.75 3      0.375
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07/20/15

Find the equation of the exponential function represented by the table below.
x     y   0     0.1 1     0.2 2     0.4 3     0.8
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Functions Algebra 2

07/19/15

Let f(x) = x^2 - 16. Find f-1(x).
Let f(x) = x^2 − 16. Find f−1(x).
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Functions

07/15/15

Find the function that satisfies
dJ/dt=4J with J(0)= 5
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Functions

06/22/15

Find a such that min {x2,4} = x2 x 1[0,a] (x) + 4 x 1(a,8) (x)
Find a such that min {x2,4} = x2 x 1[0,a] (x)  +  4 x 1(a,∞) (x)     1[0,a] (x) basically means that if X is within the intervals that the answer will be 1 and if it is not then the answer will... more
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Functions

06/20/15

if f(x)=3(x+5)+4/x what is f(a+2)
i dont get it? explain ??
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Functions

06/18/15

Adding Functions
f(x)=3/2x+4 plus g(x)=-4 and f(6),g(6)
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06/15/15

How do I find the following functions
From   f(x) = 4x − 3, g(x) = 2 − x   (a) (f + g)(x) = (b) (f − g)(x) = (c) (fg)(x) = (d) (f/g)(x) =   And What is the domain of f/g?
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06/15/15

Use the function to evaluate the indicated expressions and simplify.
f(x) = x + 8     1. f(x2) =   2. (f(x))2 =
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06/13/15

finding a profit function. Help!!!
A) Find a profit function from previous answers as a function of q. (Let UPPER CASE 'P' represent the profit and lower case 'p' represent ticket price)   Previous Equations: Cost Function C(Q)=... more
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06/13/15

Break even point!! Help!!!
Scenario with formulas: Cost Function C(Q)= 8q+3200 Revenue Function R(Q)= -10p^2+850p ( in terms of q,  (1/10q^2)+85q ...? I think?) Find the break even point(s) for this scenario. Identify the... more
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06/12/15

Domain and Range
I need help finding the domain and range of this function   y=(-4/x-4)+4
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06/10/15

I need help finding the domain and range of these functions
y=(1/x)-2 and also y=(-4/x-4)+4   also the problem told me to compare 
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06/10/15

Find a function whose graph is a parabola with this vertex and passes through this point
Parabola with vertex (7,8) that passes through the point (6,-9)
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06/10/15

Maths questions On Trigonometry and functions....
If 0≤α≤π and 0≤β≤π meets α+β=2/3π and sin α=2sinβ,the value of tan(α-β)=...A.1B.square root 2C.2-(square root 3)D.square root 3E.2+(square root 3)A function f(x)=4x^3-18x^2+15x-20 is maximum on... more
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Functions Pre Calculus Zeroes

06/09/15

How do I find the zeroes of this function?
f(x) = 25x2 + 60x + 36   and how do I find the maximum or minimum value of f(x).
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Functions

06/08/15

help please
Consider the function represented by the equation y-6x-9=0Which answer shows the equation written in function notation with x as the independent variable?
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Functions

06/02/15

How do I find the domain and range in a function?
I know that they domain is the x and range is the y.
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05/28/15

sketch a graph of a function that satisfies all of the following conditions.
1. Sketch a graph of a function that satisfies all of the following conditions: 1. f (3)=42. limx--->3 f (x)=-13. limx--->-2 f (x) does not exist.4. limx--->-2- f (x)=42. Sketch a graph... more
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