28 Answered Questions for the topic Relations And Functions

07/07/18

#### Rate of change of 3 variables

Hello Experts, I am trying to find the CPU performance of different CPU models and trying rate each cpu models.i have run our standard script and found the run time for all the cpu models for every...
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06/28/18

#### How do I find out if this equation is a function or not?

The question is
Determine if each relation is or is not a function.
And the questions are
1. y=2x2-3x+1
2. y=3/2x-4
3. y=-3x4+x3-2x+1
I would like to know the explainations. From the content...
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06/24/18

#### Find the range .

f(x)=1⁄√9-x²
Domain= (-3,3)
Sol.1⁄√9-(±3²)=1/0=Not defined
1/√9-(±2²)=1/√5
1⁄√9-(±1²)=1/√8
1⁄√9-0=1/√9=1/3
Then ,why range is =[1/3,∞) ? Why the answer is ≠[1/3,1/√5]?

05/27/18

#### f(x)=2x+1. Draw y=f(x), y=f^1(x) and y=x on the same axes.

f(x)=2x+1
a. was to find f^1(x) inverse, which I got (y-1)/2
b. Draw y=f(x), y=f^1(x) and y=x on the same axes. There is a graph paper provided for the question.

05/12/18

#### Domain of the function f given by f(x) = 2 – |x – 5| is

It is taken from the chapter "relations and functions" from class 11th. This questions also have options i.e.,
a) R^+
b) R - {5}
c) R - {-5}
d) R

02/14/17

#### Determine g(x-1) for the following function. g(x)=-4^2+4x-5

Determine g(x-1) for the following function.
g(x)=-4^2+4x-5

12/12/16

#### Composition of relations on the real numbers.

Here are four relations defined on R, the set of real numbers:R1 = { (x, y): x ≤ y }R2 = { (x, y): x > y }R3 = { (x, y): x < y }R4 = { (x, y): x = y }
Describe each relation below. (Hint:...
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09/19/16

#### Graph each function

f(x)=4x-6 I thought you would use y=mx+b to graph this. Not completely sure about this. If someone could help me with this problem that would be great.

03/28/16

#### Functions and linear relations

The function f(x) = 3 - 2x^2 , has a domain {-6, -4, 0, 2, 5} which of the following is an element of the range of the function?
A.) 35
B.) 27
C.) 1
D.) -29

03/28/16

#### the function of f(x) = 6 - 2x has a domain of {0, 2, 4, 6, 8}

the function of f(x) = 6 - 2x has a domain of {0, 2, 4, 6, 8} which of the following is NOT an element of the range of the function, A.) -10, B.) 2, C.) 4, D.) -6.

02/21/16

#### how many unique functions?

I am not sure how to answer this questionLet S = {1, 2} and T = {a, b, c}.How many unique functions are there mapping S → T? (Is it 2? because (1,a) and (2,b) ) How many onto (surjective) functions...
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09/22/15

#### We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if

We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if:
a) a0 = 1 og a1 = 0?
b) a0 = 0 og a1 = 1?
c) a0 = 1 og a1 = 2?

09/22/15

#### Solve this recurrence relation and find a2 and a3?

We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if:
a) a0 = 1 and a1= 1?
b) a0 = 0 and a1 = 0?

08/07/15

#### what is the range of f(x) = 1/(9-x^2)^1/2

chapter = relations and functions
'^' stands for 'raised to ' or 'to the power'

08/07/15

#### what is the range of f(x) = 1/(9-x^2)^1/2

chapter = relations and functions
'^' stands for 'raised to ' or 'to the power'

04/20/15

#### Relations and Inverse Functions

So I am trying to study notes and do homework for my math class. We are studying Relations and Inverse functions. I know how to go from a Relation to a Inverse function and when i am given the...
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03/31/15

#### In mathematical relations such as reflex, symmetric, transetive and so on. Does it need to occur once or must it apply to all values?

I want to know if different scenarios in relations must satisfy all the value in the relation.
In mathematical relations, a given set relation is reflexive if all the elements in the set exhibit...
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09/21/14

#### Write an equation of the line that passes through the point (-7,2) and is both parallel and perpendicular to y=-3

equation that passes through point (7,2)
and is both parallel and perpendicular to y= -3

04/23/14

#### class 11 Relations and functions

Let f be a function defined by f:x→5x2 + 2 : x∈R
i) Find the image of 3 under f.
ii)Find f(3).f(2)
iii)Find x such that f(x)=22
Please response to this question fast. i have day after...
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05/11/13

#### The area A of a parallelogram is the product of the base b and the height h Formula to express given relation?

Formula to express the given relation. The area A of a parallelogram is the product of the base b and theheight h

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