# 2.2 Functions

 Page 1 / 1
Functions are predefined formulas that simplify manual entry and allows us to carry out calculations that would otherwise be impossible.

## Functions

The vast majority of engineering computations require a complex set of mathematical operations such as logarithms and trigonometric functions. Functions are predefined formulas that simplify manual entry and allows us to carry out calculations that would otherwise be impossible. Excel and other mainstream spreadsheet apps have an extensive library of built-in functions. For example, we can use the SUM function to total all the values in a column or use the MAX function to find the biggest number in a range of cells. However, functions can do a lot more than just math. They can look up data in another location, calculate cells only if they meet a specific criteria and combine the contents of two or more cells.

## Elements of a function

A function can consist of five elements:

• Numerical values or text-strings (such as 1.2, or HeatLosses).
• Cell references (including named cells and ranges).
• Operators.
• Worksheet functions (e.g. SUM or AVERAGE) and their arguments.
• Parentheses to control the sequence of arithmetic operations.

## Miscellaneous functions

The AVERAGE function returns the average of all the values in that array. The syntax is as follows: `=AVERAGE(A1:B5)`

The MIN function returns the smallest number in a set of values. The syntax is as follows: `=MIN(A1:B5)`

The MAX function returns the largest value in a set of values. The syntax is as follows: `=MAX(A1:B5)`

The SUM function adds all the numbers specified in a range. The syntax is as follows: `=SUM([number1],[number2],...])`

The CONVERT function converts a number from one measurement system to another. The syntax for the CONVERT function is: `=CONVERT(number,from_unit,to_unit)` The CONVERT function’s arguments are as follows:

• number: The value in from_units to convert.
• from_unit: The unit for number.
• to_unit: The unit for the result.
Temperature From_unit or to_unit
Degree Celsius "C" (or "cel")
Degree Fahrenheit "F" (or "fah")
Kelvin "K" (or "kel")
Power From_unit or to_unit
Horsepower "HP" (or "h")
Watt "W" (or "w")
Force From_unit or to_unit
Newton "N"
Pound force "lbf"

To convert kilometers to miles: `=CONVERT(A2,"km","mi")`

To convert Celsius to Fahrenheit: `=CONVERT(A6,"C","F")`

To convert milligrams to kilograms: `=CONVERT(A10,"mg","kg")`

To convert days to seconds: `=CONVERT(A14,"day","sec")`

where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
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
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
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
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
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?
what is a peer
What is meant by 'nano scale'?
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 ?
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
Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!