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From the point of construction of the graph of y=f(|x|), we need to modify the graph of y=f(x) as :

1 : remove left half of the graph

2 : take the mirror image of right half of the graph in y-axis

This completes the construction for y=f(|x|).

Problem : Draw graph of y = sin | x | .

Solution : First we draw graph of sinx. In order to obtain the graph of y=sin|x|, we remove left half of the graph and take the mirror image of right half of the graph of in y-axis.

Modulus operator applied to sine function

Modulus operator applied to the argument of sine function.

Problem : Draw graph of y = e | x + 1 | .

Solution : We first draw graph of y = e x . Then, we shift the graph left by 1 unit to obtain the graph of e x + 1 . At x = 0, y = e 0 + 1 = e . In order to obtain the graph of y = e | x + 1 | , we remove left part of the graph and take the mirror image of right half of the graph of y = e x + 1 in y-axis.

Modulus operator applied to exponential function

Modulus operator applied to the argument of exponential function.

In order to obtain the graph of y = e | x + 1 | , we remove left part of the graph and take the mirror image of right half of the graph of y = e x + 1 in y-axis.

Problem : Draw graph of y = x 2 2 | x | 3

Solution : The given expression f x = x 2 2 | x | 3 is obtained by taking modulus of the independent variable of the corresponding quadratic polynomial in x as given here, f x = x 2 - 2 x - 3 . Hence, we first draw f x = x 2 - 2 x - 3 . The corresponding quadratic equation f x = x 2 - 2 x - 3 = 0 has real roots -1 and 3. The co-efficient of “ x 2 ” is positive. Hence, its plot is a parabola which opens upward and intersects x-axis at x=-1 and x=3.

In order to draw the graph of f x = | x | 2 2 | x | 3 = x 2 2 | x | 3 , we remove left half of the graph and take the mirror image of right half of the core graph of quadratic function in y-axis.

Modulus operator applied to quadratic function

Modulus operator applied to the quadratic function.

Problem : Draw graph of function defined as :

y = 1 | x | + 1

Solution : It is clear that we can obtain given function by applying modulus operator to the independent variable of function given here :

y = 1 x + 1

This function, in tern, can be obtained by applying shifting modification to the argument of the function given as :

y = 1 x

We, therefore, first draw f x = 1 / x . Then we draw g x = f x + 1 = 1 / x + 1 by shifting the graph left by 1 unit. Finally, we draw h x = g | x | = 1 / | x | + 1 by removing left half of the graph and taking mirror image of right half of the graph in y-axis. .

Modulus operator applied to rational function

Modulus operator applied to the argument of rational function.

Modulus function applied to the function

The form of transformation is depicted as :

y = f x y = | f x |

It can be seen that modulus operator here modifies the value of the function itself. In other words, it is like changing output of the function in accordance with nature of modulus function. The output of the function is now either zero or positive number. This has the implication that part of the graph y=f(x) corresponding to negative function values is not present in the graph of y=|f(x)|. Rather, negative function value of f(x) is converted to positive function value. This change in the sign of function takes place without changing magnitude of the value. It implies that we can obtain function values, which correspond to negative function value in y=f(x) by taking image of negative function values across x-axis. This is image in x-axis.

Questions & Answers

how can chip be made from sand
Eke Reply
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Good
What is power set
Satyabrata Reply
Period of sin^6 3x+ cos^6 3x
Sneha Reply
Period of sin^6 3x+ cos^6 3x
Sneha Reply

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Source:  OpenStax, Functions. OpenStax CNX. Sep 23, 2008 Download for free at http://cnx.org/content/col10464/1.64
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